4G. nouMoxoTus. 343 



c-e. 6 (V. 189, 188; C. Oil River. II. 11. Johnston, Esq. [P.]. 



42, 43) & 2 (V. 180; 



C. ,-54). 

 f. 6 (V. 198 ; C. 56). Gaboon. H. Ansell, Esq. [P.]. 



11. Lycophidium elapoides. (Plate XXII. fig. 3.) 

 Lycopliidiuui elapoides, Giinth. Proc. Zool. Soc. 1874, p. 444. 



Diameter of the eye greater than its distance from the luouth. 

 llostral twice as broad as deep, just visible from above; internasals 

 hardly as large as the nasals ; prajfrontals as long as broad ; fi-ontal 

 once and a half as long as broad, as long as its distance from tho 

 end of the snout, a little shorter than the parietals ; loreal elongate, 

 entering the eye ; prajocular as large as the supraocular, broadly in 

 contact with the frontal ; two postoculars, both in contact with the 

 parietal; temporals '2 + 'S; eight upper labials, third, fourth, and 

 fifth entering the eye, seventh largest ; chin-shields very small, the 

 anterior in contact with four lower labials. Scales in 17 rows. 

 Ycntrals 225 ; anal entire ; subcaudals 72. Yellowish above, with 

 black annuli, which are a little broader than the interspaces between 

 them, and interrupted on the belly ; head dark brown, sides dotted 

 witli yellowish ; belly yellowish, dotted with black. 



Total length 410 miUim. ; tail 90. 



Cameroons. 



a. J (V. 225 ; C. 72). Cameroons. (Type.) 



4G. HORMONOTUS. 



Lamprophis, part., Dum. Sf Bibr. Erp. GSn. vii. p. 427 (1854). 

 Hormouotus, Hulloic. Proc. Ac. Philad. 1857, p. 56 ; Cope, Proc. Ac. 



Philad. ISGO, p. 262. 

 Heterolepis, part., Jan, Elenco sist. OJid. p. 98 (1863) ; Mocquard, 



Bull. Soc. Philom. (7) xi. 1887, p. 8. 



Maxillary and dentary bones angularly bent inwards anteriorly; 

 the five anterior maxillary teeth increasing in size, the fourth and 

 fifth very large, fang-like, followed after an interval by 15 small 

 equal teeth ; anterior mandibular teeth strongly enlarged. Head 

 very distinct from neck, depressed ; eye large, with vertically elliptic 

 pupil. Body compressed ; scales smooth, without pits, in 15 rows, 

 those of the middle row enlarged ; ventrals with a lateral keel. 

 Tail moderate ; subcaudals in two rows. Hypapophyses developed 

 throughout the vertebral columji. 



West Africa. 



1. Hormouotus modestus. 



Lamprophis modestus, Dum. ^- Bibr. vii. p. 429 (1854) ; A. Dum. 



Arch. Mus. x. 1859. p. 197. 

 Hormouotus audax. Hallow. Proc. Ac. Philad. 1857, p. C6. 



