346 COLUBRID. 
2. Simocephalus guirali. 
Heterolepis bicarinatus (non D. § B.), Sauvage, Bull. Soc, Philom. 
(7) viii. 1884, p, 145. . 
— guirali, Mocquard, Bull. Soc. Philom. (7) xi. 1887, p. 23, pl. ii. 
fig. 3. 
Rostral much broader than deep, just visible from above ; inter- 
nasals broader than long, two thirds the length of the prefrontals ; 
frontal as long as broad or slightly longer, as long as the pra- 
frontals, much shorter than the parietals ; loreal as long as deep; 
one pre- and two postoculars; temporals 142; seven upper 
labials, third, fourth, and fifth entering the eye; five lower labials 
in contact with the anterior chin-shields, which are a little longer 
than the posterior. Scales strongly keeled and striated, the stria- 
tions directed obliquely towards the keels, in 15 rows (17 on the 
neck), Ventrals 248-255; analentire; subcaudals 60-70. Black 
above, the lateral scales tipped with yellow ; lower parts yellow; a 
black spot at the outer end of each ventral; subcaudals brown in 
front. 
Total length 1260 millim. ; tail 160. 
Coast of Guinea. 
a-b. 2 (V. 248; C.60)& Oil River District. H.H. Johnston, Esq. 
yg. (V. 248; C. 70). [Ph 
3. Simocephalus poensis. 
Heterolepis poensis, Smith, Ill. Zool. 8. Afr., Rept. (1847); Boettg. 
Ber, fone :. Ges. 1889, p. 279; Bouleng. Ann. §& Mag. N. H. (6) 
viii. 1891, p. 346. 
bicarinatus, Dum. § Bibr. vii. p. 422 (1854); Jan, Icon. Gén. 
36, pl. vi. fg. 5 (1870); Mocquard, Bull. Soc. Philom. (7) xi. 
1887, p. 19, pl. i. fig. 2. 
Simoce Aus poensis, Giinth. Cat. :: 194 (1858), and Ann. § Mag. 
araee’ (3) xii. 1863, p. 360; Bocage, Jorn. Sc. Lisb. iv. 1873, 
p- 218. 
Rostral nearly twice as broad as deep, just visible from above; 
internasals broader than long, one half or three fifths 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 
as long as deep or a little longer; one pre- and two postoculars ; 
temporals 1+2; seven upper labials, third and fourth entering the 
eye; five lower labials in contact with the anterior chin-shields, 
which are a little longer than the posterior. Scales strongly 
keeled, secondary keels feebly marked or absent, in 15 rows (17 on — 
the neck). Ventrals 240-256; anal entire; subcaudals 75-124. 
Blackish above and on the outer ends of the ventrals, yellow 
inferiorly. 
Total length 1200 millim. ; tail 220. 
West Africa. 
