2. TTPHLOPS. 55 



the prsefrontal, which is large ; nostril close to the rostral, between 

 two nasals, the anterior of which is in contact with the first labial ; 

 preeocular very large, in contact with the second, third, and fourth 

 labials ; ocular in contact with the nasal, separated from the fourth 

 labial by a subocular; eyes hidden ; four upper labials. Diameter 

 of body 60 times in the total length ; tail rounded, a little longer 

 than broad. 18 scales round the body. Colourless. 



Total length 360 mUlim. 



Zanzibar. 



a. Ad. Zanzibar. Sir J, Kirk [C.]. 



94. Typhlops caecus. 



Onychocephalus csecus, A. Dum. Rev. et Mag. Zool. 1856, p. 462, 



pi. xxi. fig. 4. 

 Typhlops csecus, Jan, Icon. G6n. p. 31, 1. 4, pis. iv. & v. fig. 7 



(1864). 

 Letheobia caeca, Cope, Proc. Acad. PhUad. 1868, p. 322. 



Snout strongly projecting, with sharp horizontal edge ; nostrils 

 inferior. Eostral very large, its posterior border broadly truncate 

 and in contact with the very broad preefrontal ; nostril touching the 

 rostral, the nasal cleft very short and proceeding from the side of 

 the rostral ; preeooular present, large, in contact with the second 

 and third labials ; ocular small, smaller than the subocular, by 

 which it is separated from the labials, in contact with the nasal ; 

 eyes not distinguishable; four upper labials. Diameter of body 

 74 times in the total length ; tail as long as broad, ending in a 

 spine. 22 scales round the body. Pale brownish. 



Total length 370 millim. 



Gaboon and Sierra Leone. 



a. Ad. Sierra Leone. Dr. A. Giinther [P.]. 



95. Typhlops newtonii. 



Typhlops (Onychocephalus) newtoni, Socage, Jorn. Sc. Lisb. (2) ii. 

 1891, p. 61. 



Closely allied to the preceding, but rostral rounded behind instead 

 of truncate, prseocular and ocular subequal in size, and scales in 28 

 rows. Uniform yellowish white. 



Total length 400 millim. ; diameter of body 8 ; length of tail 6. 



Ilheo das Eolas, south of St. Thome, Gulf of Guinea. 



96. Typhlops unitseniatus. 



Typhlops (Letheobia) unitseniatus, Peters, Mon. Berl. Ac. 1878, 

 p. 205, pi. ii. fig. 5. 



Snout very prominent, hooked, with sharp horizontal edge and 

 inferior nostrils. Eostral very large,extending posteriorly far beyond 



