neir Snakes from South Cameroon. 325 



tlian broad, lonpjer than its distance from the end of" the 

 pnout, as long as or a little shorter than the jjarittals ; one 

 pise- and two postoculars ; two superposed temporals, followed 

 bj keeled scales; seven upper labials, third and fourth 

 entering the eye ; a pair of large chin-shields, followed by a 

 smaller pair or by the first ventral shield. Scales in 20 to 

 23 rows, the smaller oblique lateral scales with serrated keel 

 reduced to two or three series. Ventrals 237-239; anal 

 entire ; subcaudals 79. Olive above, with very indistinct 

 yellowish cross-bars on the back ; upper surface of head with 

 black vcrmiculations ; belly plumbeous grey or olive-grey, 

 more or less speckled with blackish. 



Total length 900 mm. 



Two specimens, (J (Sc. 20; V. 239; C. 79) and ? (So. 23; 

 V. 237; C.?),from Efulen. 



The larger size of the eye, combined with the low numbc r 

 of scales and the coloration, induces me to regard this snake 

 as Sj)ecifically distinct from any of the numerous forms of 

 Dasypeltis hitherto described. In the larger ( ? ) specimen 

 (900 mm.) the head measures 25 mm. and the eye 4 ; in the 

 smaller [^) specimen (765 mm.) the head measures 18 mm. 

 and the eye 4. In adult specimens of D. scahra the eye 

 measures only 3 mm. 



Dipsadohoa isolepis. 



Rostral a little broader than deep, just visible from above ; 

 internasals a little broader than long, half as long as the 

 piaefrontals ; frontal a little longer than broad, as long as its 

 distance from the end of the snout, shorter than the parietals ; 

 loreal deeper than long ; one prasocular, forming a suture 

 with the frontal; two postoculars ; temporals 1 + 2; eight 

 upper labials, third, fourth, and rifth entering tlie eye ; six 

 lower labials in contact with the anterior chin-shields, which 

 are longer than the posterior. Scales in 19 rows, not oblique, 

 vertebrals scarcely enlarged. Ventrals 199 ; anal entire ; 

 subcaudals 50. Blackish grey above and under the tail ; 

 up|ier lip and lower surface of head and body yellowish 

 white. 



Total length 435 mm. ; tail 70. 



A single female specimen from Efulen. 



This species connects the genera Dipsadohoa and Leptodira. 



AparaUactus Batesii. 



Diameter of eye greater than its distance from the oral 

 margin. Kostral a little broader than deep, the portion 

 Ann. &; Ma</. X. Hist. Ser. 7. Vol. xix. 23 



