110 



AGAMID^. 



uo teeth ou the palate. No dermal ossifications on the head or 

 body. Clavicle slender, not dilated ; interclavicle T'S'i'iptjd or 

 anchor- shaped. 



Fig. 35. — Pectoral arch of Calotcs jubatus. 



cl. Clavicle, cor. Coracoid. id. Interclavicle. st. Sternum. 



e.cor. Epicoracoid. sc. Scapula. 



Tongue short or moderate, thick, not or but slightly nicked 

 anteriorly, villose. Eye small, pupil round ; eyelids well developed. 

 Ear distinct or hidden. Scales usually imbricate ; no symmetrical 

 shields on the crown ; ornamental appendages, such as crests, gular 

 pouches, &c., frequently present. Limbs well developed. Eemoral 

 pores aljsent in most of the genera. Tail usually long and not 

 fragile. 



Agamoids are mostly oviparous. Pla-ynocephalus is reported 

 to be ovoviviparous. Many of the Indian forms are arboreal, and 

 exhibit to a remarkable degree the rapid changes of colour so well 

 known in the Cameleons. 



Members of this family inhabit Africa, Asia, Australia, and 

 Polynesia ; both the species and genera are most numerous in the 

 Indian Region, of the Beptile fauna of which they, and especially 

 the arboreal forms, form one of the typical features. 



Synopsis of Indian, Ccyhnese, and Burmese Genera. 



A. No femoral pores. 



a. Ribs much prolonged, supporting a 



wiug-like dermal expansion Deaco, p. 111. 



h. No wing-like lateral expansion, 

 a. Body not depressed. 



a". Four toes only Sitana, p. 114. 



h". Five toes. 



«. Tympanum hidden. 



a. Fifth toe short, not longer 



than first ; no dorsal crest. . OxoCRvrTis, p. 115. 

 (■i' . Three parallel longitudinal 

 folds on each side of the 

 middle of the throat, curved 

 and converging backwards, 

 forming a U-shaped figure. . 1''tyctol^mus, p. IIG. 



