346 COLUBEID^. 



2. Simocephalus guirali. 



Heterolepis bicarinatus (more D. %■ B.), Sauvage, Ball. Soc. Philom. 



(7) viii. 1884, p. 145. 

 guirali, Mocquard, Bull. Soc. Philom. (7) xi. 1887, p. 2.3, pi. ii. 



fig. 3. 



Eostral much broader than deep, just visible from above ; inter- 

 nasals broader than, long, two thirds the length of the prsefrontals ; 

 frontal as long as broad or slightly longer, as long as the prse- 

 frontals, much shorter than the parietals ; loreal as long as deep ; 

 one prse- and two postoculars ; temporals 1 + 2; 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 248-25-5; anal entire; 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. 5 (V. 248 ; 0. 60) & Oil River District. H.H.Johnston, Esq. 



yg. (V. 248 ; 0. 70). [P.]- 



3. Simocephalus poensis. 



Heterolepis poensis, Smith, III. Zool. S. Afr., Rept. (1847) ; Boetig. 



Ber. Senck. Ges. 1889, p. 279 ; Bouleng. Ann. Sf Mag. N. H. (6) 



viii. 1891, p. 846. 

 bioarinatus, Dum. ^ Bibr. vil. p. 422 (1854) ; Jan, Icon. Oen. 



36, pi. vi. fig. 5 (1870); Mocquard, Bull. Soc. Philom. (7) xi. 



1887, p. 19, pi. i. fig. 2. 

 Simocephalus poensis, Oiinth. Cat. p. 194 (1858), and Ann. 8f Mag. 



N. S. (3) xii. 1863, p. 360 ; Socage, Jorn. Sc. Lisb. iv. 1873, 



p. 218. 



Eostral nearlj' twice as broad as deep, just visible from above ; 

 internasals broader than long, one half or three fifths the length of 

 the prsefrontals ; 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 prse- and two postoculars ; 

 temporals l-)-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). Yentrals 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. 



