( 126 j 



T. mirus Jan. 



Rostral shield half as broad as the head, its lower portion 

 being broader than long. The frontonasal extends behind the 

 rostral without touching its fellow. Above the nostril it is 

 broader than the rostral. Its hinder margin is S shaped and 

 bordered by two shields, the upper a prseocular, and a lower one 

 which is a subocular. The ocular is situated behind the prseocular 

 and above the fourth labial. The first labial touches the rostral 

 and nasal. The second the nasal, frontonasal, and subocular, 

 slightly ascending between these last. The third is smaller than 

 the second, and in contact with the subocular only. The fourth 

 is as large as the other three and in contact with the subocular 

 and ocular. 



Scales of body in 18 longitudinal and 333 transverse rows. 



Body thicker behind than in front, circumference at centre 

 ■j^th of entire length. 



Colour uniform brown. Snout yellow. 



Inhabits Ceylon. 



Onychocephalus, Dumeril et Bibron. 



Rostral with a trenchant anterior edge. 



O. acutus. D. et B. 



Typhlops Russelii, Gray. 



0. Westermanni, Lubken. 

 Rostral exceedingly large, covering nearly the whole of the 

 upper surface of the head, sharp edged in front where it is slight- 

 ly bent down into a rather acute point. Its lateral margin 

 touches both eye and nostril. Head shields overlap each other, 

 so the eye is seen through the ocular and the overlapping fronto- 

 nasal. Prseocular situated behind the lower portion of the 

 fronto-nasal. The ocular behind its upper portion. First labial 

 touches the rostral and nasal. The second, the nasal, fronto- 

 nasal, and prseocular. The third and fourth touch the sub-ocular. 

 Scales on body in 28-29 longitudinal and in 466 to 500 trans- 

 verse rows. Colour light bronze, each scale on the back with a 



