The external outlet of the | The outlet between the 10th rectum and vulva between | tergum and the 9th sternum.
The first abdominal segment, which is especially liable to dislocation and alteration in Insects, occupies its theoretical position in the Cockroach, though both tergum and sternum are reduced in size.
The tenth tergum is notched in both sexes, as in the adult female.
The sternum is often altogether wanting, while the tergum may unite with the metathorax.
The Tenth Tergum reflected to show the external male organs in situ.
The longitudinal tergal muscles extend from the fore part of each abdominal tergum, including the first, to the same part of the tergum next behind.
The tenth tergum is notched in the middle of its posterior margin.
On each side the tergum overlaps the sternum, and hangs down as a side-flap, or pleuron.
On the upper side of the abdomen the terga of the somites overlap, the front part of each being pushed under the tergum in front when the abdomen is straightened, and only exposed to view when the abdomen is bent.
Each leg-bearing somite contains a distinct tergum and sternum, the number of sterna never exceeding that of the terga.
B, Tergum and part of a second of the same enlarged to show the position of the stigmata o, o; p, hinder margin of tergum.
The tergal plate of the somite bearing the toxicognaths always remains distinct and separates the head-shield from the tergum of the first leg-bearing somite.
The tergal plate of the somite bearing the toxicognaths is suppressed, probably by fusion with the tergum of the first leg-bearing somite.
Tergum of segment, bearing first pair of legs (d).
A dorsal and a ventral plate are often distinguished, known respectively as the tergum and the sternum, and the tergum may overhang the insertion of the limb on each side as a free plate called the pleuron.
Scutum internally without an adductor ridge; tergum with the spur, sharply truncated, almost one third of width of valve.
Scutum, with the lines of growth smooth; no distinct pit for the lateral depressor muscle: tergum as in B.
There is considerable variation in the degree to which the transverse ledge on the under side of the fixed tergum projects, and therefore in the depth of the hollow thus formed.
Scutum without an adductor ridge; tergum with the spur rather narrow.
The line of junction between the scutum and tergum is nearly straight, and nearly at right angles to their longer axes.
Scutum with the lines of growth crenated: tergum with the spur truncated, broad as half the valve, and depending beneath the basi-scutal angle as much as half its own breadth.
Shell brownish, plicated; orifice twice as long as broad: tergum triangular, equilateral, with the basal and carinal margins slightly protuberant.
The basal margin of the tergum is either straight, or depends a little on the scutal side, thus producing a small spur: the crests for the depressor muscles are strongly marked, and depend beneath the basal margin.
I may remark, that in all the species of Lepas, the upper part of the tergum seems particularly variable.
From the depth of the two opposite folds, namely, that caused by the tergal edge of the scuta and that by the crest of the carina, the inner face of the tergum is divided into two almost equal areas.
The spike and cutting edge together answer to the double occludent margin of the tergum in Lepas.
The widest part of the tergum either equals in width, or is only two-thirds of the width of the widest part of the carina beneath its umbo.
The degree of acumination of the basal portion of the tergum also varies; the internal surface sometimes has small crests radiating from the umbo.
Valentiana, this ridge on the tergum being folded over towards the scutum, forms a conspicuous furrow, receiving the tergal margin of the latter.
In Pollicipes the carinal margin of the tergum can be divided into an upper and lower carinal margin; of this there is only a trace (fig.
VII is here certainly thetergum of the first somite of the mesosoma--the genital somite--and is not a survival of the embryonic praegenital somite.
The posterior carapace of the Trilobites and of Limulus is probably enough in origin a telsonic carapace--that is to say, is the tergum of the last segment of the body which carries the anus.
VII, Usually considered to be the tergum of the genital somite, but suggested by Pocock to be that of the otherwise suppressed praegenital somite.
In the Achorutidae the head is forwardly directed, the tergum of the prothorax conspicuous, and the spring small or vestigial.
Sessilis is properly applied to the broad back of a stout horse, affording a good seat ("tergum sessile," Ov.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "tergum" in a variety of sentences. We hope that you will now be able to make sentences using this word.
