At nightfall they conceal themselves amid the foliage of some moderately tall tree, or in the great tufts of orchids which flourish about the arboreal giants.
Thus some variety was given to the arboreal club-mosses of these early forests.
In the Middle Devonian this meagre flora had been replaced by one rivalling that of the Carboniferous, and including pines, tree-ferns, and arboreal forms of Lycopods and of equisetaceous plants, as well as numerous herbaceous plants.
May it not have been a survivor of an old arboreal flora extending back even to the Laurentian itself?
They seem, however, to realise the idea of arboreal plants having structures akin to those of thallophytes, but with seeds so large and complex that they can scarcely be regarded as mere spores.
But such arrangements would not suffice for a tree, and hence in the arboreal Lycopods of the Erian age a more complex structure is introduced.
These animals do not differ very strikingly in form from the terrestrial kangaroos, and appear to be but imperfectly adapted to an arboreal life, as they move rather slowly, and do not seem to have a very secure footing on the limb of a tree.
In the forests of Ke, arboreal Liliaceae and Pandanaceae abound, and give a character to the vegetation in the more exposed rocky places.
The limbs are modified into pentadactyle hands and feet of the arboreal type, and are protected by nails.
In the order of the Primates they are greater than in many other orders, chiefly because of the arboreal life of our ancestors.
Many animals hide in thick undergrowth when death approaches them; and, leading an almost entirely arboreal life, the Primates are especially likely to disappear without being fossilized.
The walk is semierect; in adaptation to the prevailingarboreal life, the arms are longer than the legs.
By the arboreal life of the highest forms the hand is developed as the instrument of the thinking brain.
Hence carnivora ruled the ground, and certain arboreal apes became continually more anthropoid.
The arboreal life of higher mammals would seem to be most easily explained by the view that they were driven to it by stronger carnivorous mammals having possession of the ground.
Had not our arborealancestors developed the hand for us we could never have invented tools nor used them if invented.
The arboreal life developed the fingers and toes, and most of these end, not with a claw, but with a nail.
The prosimii, or "half apes," including the lemurs, are nearly all arboreal forms.
The magnificent arboreal growth of these forests develops itself into thousands of strange and beautiful forms, stimulated by the constant humidity of the high temperature.
The middle of the plaza is beautified by a bronze fountain with arboreal and floral surroundings.
The grateful shade thus obtained, and the long lines of charming arboreal perspective which are formed, are desirable accessories to any locality, but doubly so in tropical regions.
They are sometimes bent at an angle on the sides, and this angle may even form a sharp keel, accompanied by a notch in the posterior border, corresponding to the keel, as in several of the more arboreal genera of Colubrids.
In a few forms, arboreal or aquatic, the tail is more or less prehensile.
Though I have no evidence in confirmation of the theory, I am inclined to think that arboreal snakes are influential in causing changes.
Living in flowerland among the tops of the trees, the bird is favourably located for the discovery of snakes, but being strong and lusty there is reason to believe that the presence of slim green and grey arboreal species is ignored.
Such impetuous birds living in large communities, and thus compounding a savour calculated to attract arboreal snakes, would in the course of nature take precautions.
Tits are arboreal in habits; they seldom descend to the ground.
As was stated above, all arboreal gregarious birds have this habit.
They used arboreal life without abusing it by over-adaptation, which would have enslaved them, and made life on the ground an impossibility when the time came for their promotion to this new and more advanced stage.
Almost all the apes found their old environment and continued their arboreal life by migrating far southward through India or into Africa.
Dessication, aridity of climate, was fast compelling forest and arborealmammals to migrate or radically change their habits of life.
Man is a Primate, a distant cousin of the highest apes, though no one of these represents our "furry arborealancestor with pointed ears.
Arboreal life could teach them little more; continuance in that school would have meant a very comfortable stagnation.
Our ancestors became at home in and well adapted to arboreal life, but the adaptation was never extreme.
At the close of his arboreal life the ape had inherited or acquired the following assets: His vertebrate and mammalian structure had given him a large, vigorous, compact, athletic, adaptable body.
The Trogons are purely arboreal in habits, and frequent the larger trees of the denser forests, feeding mainly on insects.
The Toucans are large birds exclusively arboreal in their habits, and feeding mostly, if not entirely, upon fruit.
It is entirely arboreal in its habits, and has very long arms.
They are arboreal in their habits, and are found in the tropical parts of America, Africa, Asia, and Australia.
Defn: A small nocturnal andarboreal Australian marsupial (Tarsipes rostratus) about the size of a mouse.
It is arboreal in its habits, and has a bushy tail.
They have long and broad tails, are chiefly arboreal in their habits, and feed mainly on fruit.
Defn: An arboreal anthropoid ape (Simia satyrus), which inhabits Borneo and Sumatra.
Defn: Any one of several species of East Indian and Asiatic insectivores of the family Tupaiidæ, somewhat resembling squirrels in size and arboreal habits.
Central and South American arboreal porcupines belonging to the genera Chætomys and Sphingurus.
They are arboreal in their habits, and are noted for the loud, discordant howling in which they indulge at night.
They are commonly arborealin their habits, but many species live in burrows.
Defn: Any one of several species of arboreal edentates constituting the family Bradypodidæ, and the suborder Tardigrada.
They are arborealin their habits and feed largely upon the honey of flowers.
They have long, slender limbs and large eyes, and are arboreal in their habits.
One of Jonas Silsby's eccentricities was his keen sympathy for arboreal life, to which his rugged nature yearned even more than to the delicate products of the flower garden.
Arnold and was at present the most distinguished arborealbotanist in the country.
African lemurs, arboreal and nocturnal in habit, living on fruit and insects.
But such a conception leaves unexplained the great differences between monkeys and gibbons in arboreal and terrestrial activity.
The creature was not a man, nor was it an arboreal ape like the chimpanzee.
It could still climb trees well and hold things between its great toe and its second toe (as the Japanese can to this day), but it was already coming down to the ground again from a still remoter, a Mesozoic arboreal ancestry.
Bromeliae are often very abundant on trees growing on the water's edge, and this would facilitate the transition from a marine to an arboreal habitat.
Throughout the Rodent tribe we find everywhere aquatic, terrestrial, and arboreal forms.
The four limbs, with the peculiarly formed feet and hands, are those of arborealanimals which only occasionally and awkwardly move on level ground.
So, when one portion of a terrestrial species takes to a more arboreal or to a more aquatic mode of life, the change of habit itself leads to the isolation of each portion.
The anthropoid apes, as well as most of the monkey tribe, are essentially arboreal in their structure, whereas the great distinctive character of man is his special adaptation to terrestrial locomotion.
But, owing to their arboreal habits, monkeys were to a great extent freed from all these dangers.
He would observe that their whole organization was specially adapted to an arboreal life, and this specialization would be rather against their claiming the first rank among terrestrial creatures.
They are arboreal in their habits, usually green in color, and feed chiefly upon fruits.
It is arboreal in its habits and feeds mostly on birds.
A few genera are terrestrial, but most of them are more or less arboreal and generally capable of strong, swift, and sustained flight.
Leclancher's pigeon is generally found in forest and, although widely distributed, it does not occur in great numbers, except when feeding in fruit trees; it appears to be strictly arboreal in habits.
