102 DE. J. E. T. AITCHISON ON THE ZOOLOGY OF 



25. Zamenis ravergieri (Men.). 



Zamenis ravergieri, Strauch, tom.cit. p. 127 ; Blanford, torn. cit. p. 417. 



1 specimen. Tirphul. 

 1 specimen. Gulran. 

 1 specimen. Chinkilok. 



26. Zamenis ventrimaculatus (Gray). 



Zamenis ventrimaculatus, Giinth. Cat. Col. Sn. p. 105 ; Blanford, torn. cit. p. 414. 



[One large specimen of this species was got at Bezel, Khorasan. The body was greatly 

 injured, only the head and tail were therefore preserved. — J. E. T. A.] 



27. Zamenis kakelinii (Brandt). 



Zamenis karelinii, Strauch, torn. cit. p. 110. 



Zamenis ventrimaculatus, part., Blanford, torn. cit. p. 414. 



1 specimen. Helmand. 



1 specimen. Tirphul. 



1 specimen. Chinkilok. 



1 specimen. Kilki. 



28. Zamenis rhodorachis, Jan. 



Zamenis rhodorachis, De Fil. Viag. in Persia, p. 356. 



Zamenis ventrimaculatus, part., Blanford, torn. cit. p. 414. 



[One very fine specimen of this Snake, splendidly marked with a bright red broad 

 line down its back, was obtained at our second Gulran encampment, Badghis. — 

 J. E. T. A.] 



29. Zamenis diadema (Schleg.). 



Zamenis diadema, Giinth. Rept. Brit. Ind. p. 412 ; Blanford, torn. cit. p. 412. 

 Zamenis cliffordii, Strauch, torn. cit. p. 106. 



2 specimens. Quetta to Nushki. 



1 specimen. Nushki to Helmaud. 



1 specimen. Tirphul. 



[This very handsome Snake seems to be common from Northern Baluchistan to the 

 valley of the Hari-rud— J. E. T. A.] 



30. Lytorhynchtjs ridgewayi. (Plate XI. fig. 1.) 



Lytorhynchus ridgewayi, Boulenger, Ann. & Mag. N. H. (5) xx. 1887, p. 413. 



2 specimens. Chinkilok. 



Head small, distinct from neck ; snout pointed, strongly projecting. Rostral very 

 large, four-sided, the lower side longer than the upper, deeply concave, the lateral sides 

 angularly emarginate, concave, with a trace of a short longitudinal cleft ; the posterior 

 angle wedged in between the pair of frontonasals, which form a short suture. A single 

 prefrontal, twice and a half as broad as long. Frontal large, pentagonal, a little longer 



