47. sIMOCEPHALUS. 347 
Fernando Po. Niger Expedition. 
_(Type-) 
4 Fernando Po, Sir A. Smith [P.]. 
Q Cameroons. Liverpool Museum. 
; Cameroons, Dr. 1G. Fischer. 
4 Eloby district. 
g- 2 Old Calabar. Waa , Esq. 
h. Q (V. 247; C.?). Sierra Leone. H. C. Hatt, Esq. 
i. Yg. (V. 251; C.124).  W. Africa. ¥ &, Sano, Esq. 
k, 1. Yg. (V. 253, 250; | W. Africa. rs 
C. 92, 104). 
4, Simocephalus nyasse. (Prare XXIII. fig. 2.) 
eee nyasse, Giinth. Ann. §& Mag. N. H. (6) i. 1888, 
p- 328. 
Rostral much broader than deep, just visible from above ; inter- 
nasals broader than long, half the length of the prefrontals; frontal 
a little longer than broad, as long as its distance from the rostral, 
much shorter than the parietals; loreal longer than deep; one . 
pre- and one postocular; temporals 1+2; seven upper labials, 
third and fourth entering the eye, fifth sometimes touching the 
parietals ; five lower labials in contact with the anterior chin- 
shields, which are longer than the posterior. Scales strongly 
keeled, with secondary keels and tubercles, in 15 rows (17 on 
the neck). Ventrals 171-178; anal entire; subcaudals 62-63. 
Blackish brown above, paler brown below, the chin and the lateral 
ventral keel yellowish. . 
Total length 460 millim. ; tail 100. 
Lake Nyassa; Zanzibar. 
a. Hgr. (V. 178; C. 63). L. Nyassa. (Type.) 
b. Ye (V. 171; C. 62). Zanzibar. Sir J. Kirk [C.]. 
5. Simocephalus stenophthalmus. 
Heterolepis stenophthalmus, Mocquard, Budl, Soc, Philom. (7) xi. 
1887, p. 16, pl. i. fig. 1. 
Differs from H. poensis in the smaller eye, which is scarcely 
larger than the nostril, the presence of a single postocular, the Jess 
strongly keeled scales, and the number of ventrals (206-214) and 
subcaudals (59), Uniform dark purplish brown above; belly 
yellowish, with a purplish-brown spot on the outer end of each 
ventral ; subcaudals brown with whitish posterior edge. 
Total length 590 millim.; tail 110. 
Coast of Guinea. 
; 
