Defn: A division of dipterous insects in which theproboscis is large and contains lancelike mandibles and maxillæ.
Defn: The proboscis of a jellyfish; -- called also hypostoma.
It fixes its proboscis in the skin of the sheep and sucks the blood, leaving a swelling.
They have a largeproboscis with four sharp lancets for piercing the skin.
The females have a proboscisarmed with needlelike organs for penetrating the skin of animals.
The proboscisof insects is usually a chitinous tube formed by the modified maxillæ, or by the labium.
Note: The proboscis of annelids and of mollusks is usually a portion of the pharynx that can be everted or protruded.
Also applied to the proboscis or manubrium of a hydroid medusa.
The sucking proboscis of certain parasitic insects and crustaceans.
Zoöl) Defn: One of the retractor muscles of the proboscis of certain worms.
The females have a proboscis containing, within the sheathlike labium, six fine, sharp, needlelike organs with which they puncture the skin of man and animals to suck the blood.
Note: The proboscisof an elephant is a flexible muscular elongation of the nose.
Defn: A division of marine gastropods having a retractile proboscis and three longitudinal rows of teeth on the radula.
For the fact is that the feet and proboscis of the common house-fly are covered with microbes of all sorts, picked up by his explorations upon every kind of filth.
V] The proboscis of the carpenter-bee differs from that of the honey-bee, possessing a curious notched sheath, as represented in the lower cut.
Illustration: Proboscis of Carpenter-Bee] To the variations in the mouth of each of these insects it has been thought good to attach a distinct name.
In order to bring this fly as life-like as possible before my readers, I may compare its head to most tiny miniature of an elephant's, because it has a black proboscis and a pair of horny antennae, which in colour and curve resemble tusks.
It leaves a little reddish brown spot, which is extravased and coagulated blood, where their proboscis has pierced the skin.
Their proboscis is so long that, when they fix on the lower surface of a hammock, they pierce through it and the thickest garments with their sting.
The zancudo, the proboscisof which contains a sharp-pointed sucker, causes the most acute pain, and a swelling that remains several weeks.
The important organs of which this part is the seat are the eyes, the antennae, the palpi, and the proboscisor trunk.
The other tools of the working bee consist of a pair of movable mandibles, which close the mouth on its two sides, and of a trunk or proboscis (Fig.
These symptoms seem to indicate, what is probably the case, a poison in the blood; the germ of which enters when the proboscis is inserted to draw blood.
When an Anopheles mosquito is at rest the head and proboscis are held in one line with the body and the body rests at a considerable angle to the surface on which it is standing.
When the proboscis is fully inserted into the skin the tips of these maxillæ may also be embedded in the tissue and perhaps help to make the wound larger.
Those on the proboscis may be transferred directly to the next victim that it is thrust into, and those in the stomach may be carried for some time and finally liberated when the flea is feeding again or when it is crushed by the annoyed host.
Head and thorax of female mosquito (Ochlerotatus lativittatus); the short maxillary palpi are just above the proboscis and below the thread-like antennæ.
Cross-section ofproboscis of female (a) and male (b) mosquito.
Just above this piercing proboscis is a pair of flat, obtuse, somewhat triangular pieces, the maxillary blades or maxillæ.
The piercing proboscis consists of three long needle-like organs, the epipharynx and mandibles, and a lower lip or labium.
Lobes at end ofproboscis of house-fly showing corrugated ridges.
From the under side of the head arises the long, fleshy proboscis (Fig.
They probably pass through the thin membrane connecting the labella with the proboscis and there find their way into the wound made by the puncture when the insect bites.
Distiproboscis: the outer third of the proboscisin Muscid flies, bearing the labella.
Fistula: a slender tube: specifically applied to the channel formed by the union of the two parts of proboscis in Lepidoptera.
Dichaetae: a group of brachycerous Diptera with a proboscis consisting of two parts: Muscids, etc.
The pharynx and the mouth can contract and expand, seize and bite off; the former frequently admits of being protruded and retracted as a fleshy proboscis with perforating maxillæ.
Antennæ filiform, wings mostly thrown like a mantle round the body; proboscis short.
The first can readily expand and contract, frequently protrude the pharynx like a proboscis or tube, and not unfrequently has manducatory pincers, like as in Insects.
Proboscis having thick lips, and retractile into a large cephalic cavity; alulæ or halteral opercula arrested--Hypocera to Dolichocera.
In other beasts, on the contrary, it is elongated into a very muscular proboscis or snout, and is endowed with the power of voluntary motion.
Body annulate or articulate, with a claviform proboscis without an intestine; they appear to have several mouths.
The Hemiptera are characterized particularly by their highly specialized sucking mouth-parts, no other of the sucking insects having the proboscis composed in the same manner.
In fresh specimens this proboscis can be uncoiled and will be found flexible.
On either side of this proboscis is a peculiar pointed process which rises from the under side of the head.
The mouth-parts of the mosquito are in the form of a long proboscis composed of six slender needle-like stylets lying in a tube narrowly open along its dorsal surface.
Cut across the proboscis and note the canal in the centre.
The proboscis itself is composed of the two greatly modified maxillae.
The butterfly feeds (as is indicated by the structure of its mouth-parts) very differently from the larva; it sucks up by means of its long tubular proboscis the nectar of flowers, nor does it confine itself at all to the flowers of milkweeds.
Sometimes two stronger bundles of collopodia may be distinguished at the two poles of the main axis, an oral bundle (in the direction of the proboscis of the astropyle) and an aboral bundle (at the opposite pole between the parapylae).
In some it is shut up in a sharp-pointed sheath, which is of firmer texture than the proboscis, and by which the insect pierces the food, and then opens it within the wound to allow the proboscis to perform its office by extracting the juice.
As his tail is not proportional to the bulk of his body, many understand by this term his proboscis or trunk.
In Cephalodiscus and Rhabdopleura as in Balanoglossus the notochord forms a small diverticulum growing forwards from the alimentary canal into the proboscis stalk.
This arises as a diverticulum from the alimentary canal which grows forwards into the proboscis and extends beyond the front end of the central nervous system.
On another stone is seen a man with theproboscis of an elephant, and in his hand a dog; on the third is a man blowing a Javan bellows.
In his hands he has a plantain, a circlet of beads, a flower, and a cup to which the end of his proboscis is applied: a hooded snake encircles his body diagonally over the left shoulder.
One day a singular creature made its appearance in the trough; when magnified sixty diameters it resembled an oval bladder, with a sort of proboscis attached to it.
The proboscis portion, which may perhaps be termed the mother, was more advanced than her progeny, but both had a great deal to do if they meant to exhibit the original figure, and develop a set of bowels as elegantly branched.
The ciliary motion became very violent in the lower half just below the constriction, while the proboscis worked hard to make its half go another way.
The proboscis fellow had increased and rounded his body, and diminished his nose; while Mr. Flask had grown round also, and evinced an intention of cultivating a proboscis himself.
The surface was ciliated, and the neck orproboscis acted as a rudder, and enabled the creature to execute rapid turns.
The common scorpion-fly, likewise, upon the same occasion ejects from its proboscis a brown and fetid drop[359].
They thus flew from flower to flower, piercing the tubes from without, and sucking the nectar, while smaller humble-bees or those with a longer proboscis entered in at the top of the corolla.
In this case their proboscis is generally unfolded, and stretched to its full length.
The sucking-disk at the end of my proboscis looks like a twisted pewter plate.
At the end of a few weeks you will see them adhering to a leaf of potamogeton; they thrust theirproboscis into the stem, and cling to it with their palpi.
At least you will have found where he drove his proboscis and sucked the juices from your tender plant, leaving his irritating fluids behind to distort the tissues of the leaf or bud.
With the notochord he homologised the supporting rod in the proboscis of Balanoglossus, which like the notochord arises from the dorsal wall of the archenteron, and has a vacuolated structure.
The great proboscis of Balanoglossus may well be compared to the invaginable organ similarly placed in the Nemertines.
In some insects, he says, the proboscis combines the functions of a tongue and a sting, in others the tongue and the sting are quite separate.
The pollen adheres to the head or proboscis of the bee which is at work, and is thus placed either on the stigma of the same flower, or is carried to another flower.
Thus with many orchids, the pollen-masses after becoming attached to the head orproboscis of an insect do not move into the proper position for striking the stigma, until ample time has elapsed for the insect to fly to another plant.
Darwin may perhaps have supposed that these were the variety of bees whose proboscis was long enough to reach the nectar.
Remove this under microscope by pincers applied to foot-stalk of pollen-mass, and look quickly at the spontaneous movement of the saddle-shaped organs and see how beautifully adapted to seize proboscis of moth.
Thus there is a lateral nerve near each edge of theproboscis which unites with its fellow dorsally above the oesophagus at the tip of the proboscis, and ventrally beneath the oesophagus, where they fuse to form the ventral nerve-cord.
The ciliated ventral groove of the proboscis leads at its base into the simple mouth, which gives access to the thin-walled alimentary canal.
The openings of the burrows become silted up, leaving, however, a small aperture through which the proboscis is extruded.
In Bonellia the proboscis is forked at its free end, but in the other genera it is short and unforked.
When these are found the grooved proboscis folds its walls inwards, and the cilia pass the particles down the tube thus formed to the mouth.
Recently it has been shown that Echiurus swims freely at night-time, using for locomotion both theproboscis and the contraction of the muscles of its body-wall.
The system consists of the following parts:--A dorsal vessel applied to the alimentary canal is continued anteriorly into a median vessel, which traverses the proboscis to its tip.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "proboscis" in a variety of sentences. We hope that you will now be able to make sentences using this word. Other words: beak; bill; bugle; conk; muffle; muzzle; nose; nostril; nozzle; proboscis; rostrum; snout; trunk
