350 CLASS REPTILIA. 



hind-limbs as scaly flaps (Fig. 183) with 5 concealed ossified toes ; sternum 

 feeble ; pleurodont ; eyes without lids, unprotected ; tail long ; Australia 

 Tasmania and New Guinea. Pygoptis Merr. (Fig. 183) ; Cryptodelma 

 Fisch. ; Delma Gr. ; Pletholax Cope ; Aprasia Gr. ; Lialis Gr. 



Fam. 5. Agamidae. Acrodont, teeth usually divided into incisors, 

 canines, molars ; tongue short and thick ; orbit closed and temporal fossa 

 bridgad ; in Lyriooephalus a process of the pre-and-post-frontals unite to 

 form an arch ; osteoderms are abseiit ; premaxilla single, nasals double, 

 frontal and parietal single ; eyes with lids ; Old World ; about 30 genera, 

 200 species. 



Acanthosaura Gr., S.E. Asia ; Agama Daud., Afr... S. Asia, S.E. Eur. ; 

 Amphibolurus Wagl., Australia ; Aphaniotis, Ptrs., Malayasia ; Aporo- 

 scelis, Blgr., E. Afr. ; Calotcs Cuv., crest on neck and back, remarkable 

 for changes of colour, India and the Malay Islands ; Ceratopliora Gr., 

 Ceylon ; Charasia Gr., India ; Chelosania Gr., Australia ; Chlamydosaurus 

 Gr., large frill-like dermal expansion on either side of the neck, runs 

 upon its hind limbs in a semierect position, Australia ; CopJiotis Ptrs., 

 Ceylon, Sumatra ; Diporophora Gr., Australia ; Draco L., flying dragon, 

 ribs much prolonged supporting a wing-like dermal expansion, E. Indies ; 



Gonyocephalus Kaup, 

 E. Indies, Papuasia, 

 Polynesia, N.E. Aus- 

 tralia ; Harpesaurus 

 Blgr., Java ; Japa- 

 hira Gr., E, Indies, 

 S. China ; Liolepis 

 Cuv., S.E. Asia; 

 Lophocalotes Gthr., 

 B. Indian Arch. ; 

 Lophura Gr., E. 

 Indies ; Lyriooepha- 

 lus Merr. , chanieleon- 

 FiG. 192. — Tarentola tnauritanica CRegne Animal). y, Ppvlnn ■ Mo- 



loch Gr., mouth 

 small, teeth in upper jaw horizontal, directed inwards, body 

 covered with large spines, W. and S. Australia ; Otocryptis Wieg., Cey- 

 lon, S. India ; Phoxophrys Hubr., Sumatra ; Phrynocephalus Kaup, S.E. 

 Eur., C. Asia; Physignathus Cuv., Australia, Papuasia, Siam ; Ptycto- 

 laemus Ptrs., N. India ; Salea Gr., S. India ; Sitana Cuv., 4 toes, India, 

 Ceylon ; Tympanocryptis Ptrs., Australia ; XJromastix Merr., spiny-tailed 

 lizards, arid tracts of N. Afr. and S. Asia. 



Fam. 6. Iguanidae. Closely resemble the Agamidae, but with pleuro- 

 dont, rarely heterodont (and then but slightly) dentition ; Chamaeleolis 

 has teeth on the palatines ; osteoderms are absent on the body, but may be 

 present on the head as in the horn-like tubercles of Phrynosonia ; about 

 50 genera and 300 species ; arboreal, terrestrial, burrowing, semi-aquatic ; 

 some genera have abdominal ribs ; almost entirely American, except 

 Hoplurus and Chalarodon in Madagascar, and Brachylophus in Fiji ; 

 species of Sceloporus and Phrynosonia are viviparous. Anisolepis 

 Blgr., S. Brazil; Anolis Daud., abdominal ribs, digits dilated, with 

 transverse lamellae inferiorly, expert climbers, more than 100 species, 

 trop. and sub-trop. Amer. ; Amblyrhynchus Bell, herbivorous, semi- 

 marine, living on algae, Galapagos; Basili.iciis Laur., high and erectile 



