432 ANELYTROPIDZ. 
ing one fourth or one fifth of the length of the shielded part of the 
head ; eye more or less clearly distinguishable through the ocular, 
which is small and followed by two postoculars ; three azygos upper 
head-shields, viz. a prefrontal, a frontal, and an interparictal, latter 
largest; a pair of supranasals between the rostral and the nostril, 
in contact with the first labial on each side; a loreal, a preocular, 
and a supraocular; first upper labial largest, third in contact with 
the ocular; a short and broad mental, foliowed by a narrower 
shield. Scales cycloid, a little broader than long, 25 longitudinal 
series in the middle of the body. Tail measuring one third or not 
quite one third of the total length, ending obtusely. Dark brown. 
or olive, young blackish. 
Total length 310 millim., tail 105. 
West Africa. 
a-b. Ad. & yg. Angola. J. Curror, Esq. [P.]. 
'ypes. 
e Ad. Angola. J. J. Monteiro, Esq. [C.]. 
d. Hgv. Gaboon. 
e-f. Ad. & yg. Sierra Leone. Dr. A. Giinther [P.]. 
3. TYPHLOSAURUS. 
Typhline (non Wagl.), Wiegm. Herp. Mex. p.11; Dum. & Bibr. v. 
p- 885; Gray, Cat, Lrz, p. 128. 
Typhlosaurus, Wiegm. l.c. p. 64. 
Nostril pierced in the very large rostral shield, which covers the 
snout, connected with the posterior border of that shield by a long 
straight suture. Scales broad, hexagonal or tetragonal. A large 
preanal scale. 
South Africa. 
Synopsis of the Species. 
I. Rostral not longer than the other upper head-shields together ; 
interparietal twice as long as frontal. 
Snout with sharp horizontal edge; 14 
scales round the middle of the body.. 1. lineatus, p. 432. 
Snout conical, rounded ; 12 scales round 
the: body’... eke eats eee 2. aurantiacus, p. 483. 
II. Rostral at least twice as long as the other upper head-shields ; 
interparietal not larger than frontal. 
Scales hexagonal, 14 round the body .. 3. cacus, p. 484. 
Scales mostly tetragonal, 12 round the 
body Co v'ciieaieeieses enakae een a's 4. vermis, p. 434. 
1, Typhlosaurus lineatus. (Prate XXVIII. fig. 3.) 
Snout strongly projecting, with sharp horizontal edge, flat infe- 
riorly. Rostral a little shorter than the other head-shields together ; 
