288 COLUBRID. 
3. Grayia giardi. 
Grayia giardi, Dollo, Bull. Mus. Belg. iv. 1886, p. 158, fig. 
One pre- and three postoculars; temporals 1+2; eight upper 
labials, fourth and fifth entering the eye. Scales in 19 rows. 
Lake Tanganyika. 
105. XENUROPHIS. 
Xenurophis, Giinth. Ann. § Mag. N. H. (8) xii. 1863, p. 357. 
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; ventrals 
rounded. ‘Tail long, with two dorsal series of very large, shield- 
like scales; subcaudals in two rows. 
West Africa. 
1. Xenurophis cesar. 
Xenurophis ceesar, Giinth. l.c. pl. vi. fig. C; Bouleng. Zool. Rec. 1891, 
Rept. p. 11. 
Grayia longicaudata, Mocquard, Bull. Soc. Philom. (8) iii. 1891, 
CR. p.9. 
Eye as long as the snout. Rostral twice as broad as deep, just 
visible from above; internasals as long as or a little longer than 
broad, a little shorter than the prefrontals; 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 
pre- 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 posterior. 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. 
t- 9 CV. 1455,.C.P), Fernando Po. (Type.) 
b. Her. (V. 149; C. 143). Mouth of the Loango. ot H. I. Duggan 
©}: 
106. VIRGINIA. 
Virginia, Baird § Gir. Cat. N. Am. Rept. p. 127 (1858) ; Jan, Areh. 
Zool. Anat. Phys. ii, 1862, p. 23; Bocourt, Miss. Se. Mex., Rept. 
p. 542 (1883) ; Cope, Proc. U.S. Nat. Mus. xiv. 1892, p. 599. 
Carphophis, part., Dum. § Bibr. Erp. Gén. vii. p. 181 (1854). 
Maxillary teeth 22, small, subequal; mandibular teeth small, 
equal. Head small, not distinct from neck; eye small, with round 
