new Snake from Nubia. 75 
perfectly smooth, in 41 to 45 rows. Ventrals 181-187; anal 
small, entire ; subcaudals 16-19. Tail pointed, ending in a 
curved, claw-like, horny scute, as I have described in Eryx 
Jayakart. Cream-colour, above with a dorsal series of large 
dark-brown blotches, some of which alternate and are con- 
fluent into a zigzag band; a lateral series of smaller dark 
brown spots, alternating with the dorsals. 
Total length 370 millim.; tail 30. 
Two examples of this species from Sennar, obtained by 
the Italian traveller Marno, were noticed by Dr. F. Miiller 
in his Catalogue of the Reptiles in the Basle Museum 
(Verh. nat. Ges. Basel, vi. 1878, p. 650), and provision- 
ally referred to Ery# jaculus. Through the kindness of 
Dr. Miiller I have now received one of the two specimens, 
and feel no hesitation in pronouncing it to belong to a new | 
species, with which it gives me great pleasure to connect the 
name of my friend the distinguished herpetologist. 
This now brings the number of Hryces (Eryx and Grongy-. 
lophis) to eight, which may be easily distinguished by means 
of the following synopsis :— 
I. A mental groove: Eryx, Daud. 
A, Eyes latero-superior, separated from each 
other by six or more longitudinal series of 
scales ; tail obtuse or obtusely pointed. 
a. Anal shield small; ventrals and subcaudals 
narrow. 
54-65 scales across the middle of the body; ven- 
GEIS BNO Se LON pepe do ote slekers creases a eehe@ aveuecncne. seh EF. Johnii, Russ. 
40-50 scales across the middle of the body ; ven- 
(HyTMIk J AGT =WAU OLE Gt Sci bard cee Ser cook nen aera E. jaculus, L. 
36 scales across the middle of the ,body ; ven- 
EYAL Sed aicaeniere ects s Fels ei cls edule weg enicnied E, elegans, Gray. 
b, Anal shield large ; ventrals and subcaudals 
broad, the former occupying at least one 
fourth the circumference of the body .. 4H, sennariensis, Jan, 
B. Eyes entirely on the upper surface of the 
head, separated from each other by four 
longitudinal series of scales; tail pointed, 
ending in a curved, claw-like, horny scute. EZ, Jayakart, Bley. 
II, No mental groove: Gongylophis, Wag]. 
A. Scales keeled, at least on the hind part of 
the body; tail ending in a conical scute. 
8-10 keeled scales from eye to eye across the 
forehead ; rostral without angular edge; scales in 
mA MeTOW IRs Selle « waa-ss\ a0, 644 Woo fe fo cum hO lot BY cel. serie G, conicus, Schn, 
