278 | ZOOLOGY. 
one, A. carolinensis, is very abundant in the United States, where it is 
known as the green lizard or chameleon. It is an exceedingly beautiful 
animal, of a light golden green above, and greenish white beneath; the 
gular pouch, when inflated with air, is of a vermilion color. It keeps 
about gardens, and frequently enters the windows of houses in search of 
flies ; climbs trees with ease, and is even capable of walking over glass by 
means of the disks of the toes. Basiliscus (pl. 74, fig. 74) exhibits curious 
appendages in the form of a vertical fold of skin on the occiput, and a high 
crest on the back and tail, which, in the male, is supported by osseous 
appendages. The absence of femoral pores, and the palatine teeth, distin- 
guish it from other genera with crests. Of the two species known, both 
inhabiting Mexico and the regions south, one (B. mitratus) is represented 
in pl. 89, fig. 5. Amblyrhynchus is an anomalous genus first detected in 
the Gallapagos Islands. This volcanic group, so remarkable for its peculiar 
fauna, is said to contain two species of the genus: one terrestrial and 
burrowing under ground, the other living in salt water and feeding ou 
seaweeds. The genus Jeuana (pl. 74, fig. T5) is distinguished by the long 
flap or fold of skin under the throat; two series of palatine teeth; the long 
compressed tail, and the dentated crest along the back. A well known 
species, inhabiting South America, is the Iguana tuberculata (pl. 89, fig. 6). 
The genus Yrepidolepis, with ten species, is interesting on account of 
being confined to North America. Only one species, however, comes 
within the limits of the Atlantic States, the rest belonging to Mexico and 
California. The species just referred to, 7. wndulatus, is the common grey 
or brown lizard, seen so commonly running along fences or among trees, 
especially in hilly or sandy districts abounding in pine trees. The males 
have an azure blue cross on the belly. There are no crests or other 
appendages in this genus, only a roughness of the scales. The pine or 
fence lizard, as it is sometimes called, is entirely inoffensive. The closely 
allied genus Phrynosoma is also North American. Several species inhabit 
the sandy or sterile plains of ‘Texas, Mexico, and California. The short, 
squat, nearly orbicular body, the weak limbs, the long spines fringing the 
occiput, and the shorter ones scattered over the back, give the animal 
quite a curious appearance. The two most abundant species, P. cornuta 
-and P. orbiculare, are known as the Mexican or horned frog, although 
there is nothing frog-lke in their appearance. They feed upon insects, 
which they capture by stealing imperceptibly upon them; and they have 
the curious habit of feigning death, when handled, or even approached. 
Pl. 86, fig. 6, represents the latter of the species just mentioned. 
The second sub-family, that of the Acrodontes, embraces species whose 
teeth are applied by their bases, and intimately united to the jaws. The 
anterior teeth differ in shape from the posterior. There are no palatine 
teeth. All the species belong to the Old World. Lophyras (pl. 88, fig. 6) 
is a-curious genus, inhabiting Asia and Africa. In Draco (pl. T4, fig. 76) 
the skin of the sides is extended out in the form of a wing supported by the 
prolonged ribs. By this means—which much resembles the flying appa- 
ratus of Pteromys, or the flying-squirre], excepting that in the latter the 
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