( xi ) 



Family GECKOTID^. 



Head triangular. Back granular. Scales of belly rhombic. 

 Tongue thick and short. Toes generally furnished with trans- 

 verse pneumatic plates. Tail fragile, reproduced after fracture. 

 Habits nocturnal. Food insects. Femoral or prseanal pores 

 usually present in the males. 



A. — Eyelids none. 

 a. — Phalanges with undivided "pneumatic 'plates below. 



Gecko. 



Four claws on each foot. No lateral cutaneous expansion on 

 sides or tail. 



No enlarged subcaudals ... G. guttatus. 



Subcaudals enlarged ... G. stentor. 



Subcaudals band-like, irregular ... G. monarchus. 



Ptychozoon. 



Four claws on each foot. Sides and tail with cutaneous 

 expansions. 

 Skin of sides and tail expanded ... P. homalocephalum. 



Phelsuma. 

 Claws none. Pupil circular. 

 Claws none ... P. Andamanense. 



6. — Phalanges with divided pneumatic plates below. 



Calodactylus. 



Toes dilated throughout, with two sets, 



terminal and basal, of pneumatic plates 



on the four outer toes. 

 Golden yellow speckled with brown ... C. aureus. 



Hemihactylus. 



Five claws on each foot, no lateral cutaneous expansions. 

 Large triangular tubercles scattered over 



the back ... H. triedrus. 



Tubercles smaller than the last . . . H. sub-triedrus. 



