408 COLUBRID. 
rg. (Sc. 23; V. 203; A. 2; Xanthus, Haslar Collection. 
©. 101). 
r. Yg. (Se. 28; V. 197; A.1; Rhodes. C. G. Danford, Esq. 
©. 89). [P.}. 
25, Zamenis socotra. 
Zamenis socotree, Giinth, Proc. Zool. Soc. 1881, p. 463, pl. xli. 
Snout feebly projecting, obtuse. Rostral once and one third as 
broad as deep, the portion visible from above measuring one fourth 
to one third its distance from the frontal; internasals as long as or 
shorter than the prefrontals; frontal much wider than the supra- 
ocular, once and a half as long as broad, longer than its distance 
from the end of the snout, a little shorter than the parietals ; loreal 
nearly twice as long as deep; two preoculars, separated from the 
frontal, with a subocular below them ; two postoculars, and a subocu- 
lar separating the eye from the sixth and seventh labials ; temporals 
3+3 or 243; ten upper labials, fifth entering the eye ; four or five 
lower labials in contact with the anterior chin-shields; posterior 
chin-shields longer than the anterior, but extremely narrow and 
separated from each other by two or three series of scales. Scales 
smooth, in 23rows. Ventrals obtusely angulate laterally, 219-228 ; 
anal divided; subcaudals 107-119. Head olive above; body with 
olive, sometimes black-edged transverse bands, separated by narrower 
yellowish or reddish interspaces ; belly yellowish or pale olive. 
Total length 860 millim. ; tail 225. 
Socotra. 
a-c. g (V. 219; C. 119) & Q Socotra. Prof. I. B. Balfour [C.]. 
(V. 228, 222 ;’C, 117, 107). (Types.) 
26. Zamenis algirus. 
Zamenis florulentus (non Schleg.), Gervais, Mém. Ac. Sc. Montpellier, 
iii. 1857, p. 512, Ales 4. 
, 8p., Strauch, p. 63 (1862). 
Periops algira, Jan, 7 ae : GO (1863), and Icon. Gén, 48, pl. iv. 
fig. 2 (1876). 
Zamenis (Periops) algirus, Boetty. in Kobelt, Reis. Alg. Tunis, p. 459 
1885). 
—— algirus, Bouleng. Tr. Zool. Soc, xiii. 1891, p. 147 ; Konig, Sitzd. 
Niederrhein. Ges. Nat. 1892, p.; Anders. Proc, Zool. Soc. 1892, 
p. 19. 
Snout feebly projecting, obtuse. Rostral slightly broader than 
deep, just visible from above ; internasals shorter than the pre- 
frontals; frontal anteriorly considerably broader than the supra- 
ocular, about once and a half as long as broad, as long as or a little 
longer than its distance from the end of the snout, shorter than the 
parietals ; loreal a little longer than deep; one preocular, in con- 
tact with the frontal, with a subocular below it; two postoculars 
and a subocular; temporals 2+3; nine upper labials, fifth or sixth 
usually entering the eye, but sometimes separated by an additional 
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