PHELSTTMA. 



105 



lobes, confluent into a broad rounded flap at the extremity. Head 

 and back covered with small granular scales. Rostral large, 

 quadrangular; nostril pierced between the rostral, the first labial, 

 and three small nasals ; 10 to 12 upper and as many lower labials ; 

 rostral small, subtriaugular ; 3 or 4 small chin-shields on each side, 



Fig. 31. Ptychozoon homalocephalum. 



inner elongate. Back usually with scattered convex tubercles. 

 Throat covered with small granules, belly with moderate scales. 

 An angular series of about 25 praeanal pores. Tail distinctly 

 annulate, covered above with small flat granular scales and trans- 

 verse series of conical tubercles, beneath with imbricate scales. 

 Greyish or reddish brown above, with transverse undulating dark 

 brown bands ; a dark brown streak from the eye to the first 

 dorsal band. 



From snout to vent 3'75 inches ; tail 3*6. 



Hob. Arrakan, Pegu, Nicobars, Malay Peninsula, Sumatra, 

 Borneo, Java, Loo Choo Islands. 



Genus PHELSUMA, 

 Gray, Ann. Phil. (2) x, 1825, p. 199. 



Digits strongly dilated, free, clawless, inner rudimentary, with 

 undivided lamellae below. Dorsal scales uniform, granular; ven- 



