152 COLUBRID. 
lower parts white, dotted with greyish or olive, and with one or 
two dark lines on each side. 
Total length 870 millim. ; tail 190. 
Aralo-Caspian Steppes, Turkestan, Afghanistan, Eastern Persia. 
a. g (V. 192; vey C, Asia. Prof. Peters (Ft 
b-c. ¢ (V. 187; C.101) Syr Daria. M. Serverzow [C.]. 
& oN 182; C. 86). 
d. od (V. 184; C. 94). Daryalyk. M. Serverzow [C.]. 
e-i. ¢ (V.181; C. 87), Chinas, Turkestan. Se Seem Mus, 
h a 
C 
k-l. g (V.188; C.?)& N. side of Hum- St. G. Littledale, Esq. 
Q (V. 188; C. 99). boldt Mts. E.  ([P.]. 
Turkestan. 
a 3 (V. 194,184; C. Tirphul, Afghani- Dr. J. Aitchison [C.]; 
8 stan. 
, 82) & OP (V. 175, Afghan Boundary 
176; C. 72, 82). Commission. 
q. d (V.179; C, 82). Helmand. Dr. J. Aitchison [0.]; 
Afghan Boun 
Commission, 
Skull of @. 
171. PSAMMOPHIS. 
Psammophis, part., Bote, Isis, 1827, p. 521; Schleg. Phys. Serp. ii. 
p- 201 (1837); Dum. § Bibr. Erp. Gén. vii. p. 887 (1854) ; Gtinth. 
Cat. Col. Sn. - 135 (1858); Jan, Elenco sist. Ofid. p. 90 (1868). 
Psammophis, gler, Syst. Amph. p. 189 (1830); Giinth. Rept. 
pee Ind. p. 290 (1864); Bouleng. Faun, Ind., Rept. p. 365 
(1890). 
Phayrea, Theob. Cat. Rept. As. Soc. Mus. p. 51 (1868). 
Amphiophis, Bocage, Jorn. Se. Lisb, iv. 1872, p. 81. 
Maxillary teeth 10 to 13, one or two in the middle much enlarged, 
fang-lixe, preceded and followed by an interspace, the last or last 
two large and grooved and situated below the posterior border of 
the eye; anterior mandibular teeth very strongly enlarged. Head 
distinct from neck, with angular canthus rostralis ; eye moderate or 
large, wiih round pupil; frontal narrow. Body cylindrical ; scales 
smooth, more or less oblique *, with apical pits, in 11 to 19 rows; 
ventrals rounded. Tail long; subcaudals in two rows. 
Africa and Southern Asia. 
The skull of this genus, as well as that of the two preceding 
geneva, is remarkable for the wide vacuity between the frontal 
and sphenoid bones, a condition which approaches that of the 
Lacertilia. Quite in front, however, the frontals descend to join 
the sphenoid. 
* Scarcely oblique in P. crucifer and P. angolensis, 
