288 COLVRRIDM. 



3. Grayia giardi. 



Grayia giardi, Dollo, Bull. Mus. Belg. iv. 1886, p. 158, fig. 



One prgp- and three postoculars ; temporals 1 + 2 ; eight upper 

 labials, fourth and fifth entering the eye. Scaies in 19 rows. 

 Lake Tanganyika. 



105. XENUROPHIS. 



Xenurophis, Giinth. Ann. ^ Mag. N. H. (3) xii. 1863, p. 3-57. 



Maxillary teeth 35, closely set, equal ; mandibular teeth equal. 

 Head distinct from neck ; eye large, with round pupil. Body 

 cylindrical ; scales smooth, without pits, in 15 rows ; rentrals 

 rounded. Tail long, with two dorsal series of very large, shield- 

 like scales ; subcaudals in two rows. 



West Africa. 



1. Xenurophis csesar. 



Xenurophis csesar, Giinth. I. c. pi. vi. fig. C ; Boideng. Zool. Hec. 1891, 



Kept. p. 11. 

 Grayia longicaudata, Mocquard, Bull. Soc. Fhilom. (8) iii. 1891, 



C. R. p. 9. 



Eye as long as the snout. Eostral twice as broad as deep, just 

 visible from above ; internasals as long as or a little longer than 

 broad, a little shorter than the praefrontals ; frontal not broader 

 than the supraocular, once and two thirds to twice as long as broad, 

 slightly longer than its distance from the end of the snout, as long 

 as the parietals ; loreal as long as deep, or deeper than long ; one 

 prae- and two postoculars ; temporals 2 + 3 : eight upper labials, 

 fourth and fifth entering the eye ; five lower labials in contact with 

 the anterior chin-shields, which are as long as or a little shorter 

 than the ]iosterior. Scales in 15 rows (in 4 rows on the tail). 

 Ventrals 125-149 ; anal divided ; subcaudals 143-161. Dark olive 

 above, with regular narrow, whitish, black-edged cross bands ; a 

 few light spots on the head and two whitish black-edged oblique 

 bands on each side, the anterior behind the eye, the second on the 

 temple ; lower parts uniform yellowish white. 



Total length 600 millim. (tail injured) When intact the tail 

 is nearly as long as the body. 



West Africa. 



a $ (V. 145 ; C. ?). Fernando Po. (Type.) 



6. Hgr. (V. 149 ; C. 143). Mouth of the Loango. Mr. H. 1. Duggan 



[C.]. 



106. VIRGINIA. 



Virginia, Baird S<- Gir. Cat. N. Am. Rept. p. 127 (1853) ; Jaw, Arch. 



Zool. Anat. Phys. ii. 1862. p. 23 ; Bocourt, Miss. Sr. Mex., Bept. 



p. .542 (1883) ; Cope, Proc. U.S. Nat. Mus. xiv. 1892, p. 599. 

 Carphophis, part., Dum. Sf Bibr. Erp. Gen. vii. p. 131 (1854). 



Maxillary teeth 22, small, subcqual ; mandibular teeth small, 

 equal. Head small, not distinct from neck ; eye small, with round 



