ICHTHYOLOGY. 9 



strength, and very finely serrated posteriorly ; its osseous portion equals a little above one- 

 fourth of the length of the head. Pectoral half as long as the head, and reaches half-way to 

 the ventral ; the latter fin commences under the first divided dorsal ray, and does not extend 

 quite half-way to the root of the anal. Anal twice as high as its base is long ; it does not 

 reach the caudal when laid flat ; the latter fin forked. Scales oval, nearly as wide as high 

 and slightly imbricate ; the tiled row half the diameter of the eye. Free portion of the tail 

 rather longer than high. Colours bluish on the back, lightest below, dorsal and caudal 

 spotted. 



Hab. Yarkand, whence the stuffed specimen described was brought. It is 31 inches in 

 length. This species scarcely accords with the definition of Ptychobarbus, the last undivided 

 dorsal ray being osseous and finely serrated. The specimen, however, is large, whilst P. laticeps 

 forms the intermediate form between it and P. conirostris. 



13. SCHIZOPYGOPSIS STOLICZKJE. Plate II, fig. 2. 



Schizopygopsis stoliczka, Steind. Verb. z.-b. Ges. Wien., 1866, p. 785 ; Giintber. Cat. vii, p. 170. 

 B. iii, D. , P. 13, V. 11, A. i, C. 19. 



Length of head 5 to 5f , of caudal 5| to 5f , height of body 7 to 8 in the total length. 

 Eyes : diameter 4 to 5 in the length of head, 1 to 1J diameters from end of snout, and 1^ to 

 2 apart. The greatest width of the head equals its length behind the middle of the eyes ; 

 and its height equals its length excluding the snout. Mouth inferior, overhung by the 

 snout ; the maxilla reaches to below the front edge of the eye. A sharp, anterior, horny 

 edge to the mandible. Barbels absent. Fins : the dorsal commences about midway between 

 the end of the snout and the root of the caudal ; its upper edge is nearly straight, oblique ; 

 the fin is as high as the body below it, and one-third higher than its base is long ; its last 

 undivided ray osseous and finely serrated posteriorly. Pectoral not quite so long as the head, 

 and reaching rather above half-way to the ventral, which latter, arising below the middle of 

 the dorsal, is slightly the shorter, and does not reach the anal. Anal, when laid flat, reaches 

 the base of the caudal ; it is rather above twice as high as its base is long. Caudal deeply 

 forked. Free portion of the tail as high as long. Lateral line at first descends gently, and 

 then reascending, attains the middle of the body opposite the posterior extremity of the dorsal 

 fin. Colours olive superiorly, becoming white on the sides and beneath ; the whole covered 

 with irregular blackish spots. 



The ova are comparatively large. The serrated dorsal spine is strongest in specimens 

 from Leh. 



These fishes appear to be much attacked by parasites, which occasion yellowish elevated 

 tubercles, not only on the head and body, but also on the dorsal fin. 



One specimen, from Balakchi, had a shot (No. 2) imbedded in the isthmus, where the 

 parts around it had healed. 



Hab. Leh, Tankse, and fry or small fish from Lukong and Chagra (15,090 feet), 

 all from waters directly or indirectly going to the Indus. Some fry from Sarikol, the 

 waters of which go to the Yarkand River ', Aktash, Upper Kara-kul and Pan j ah, tributaries 

 of the Oxus or Amu River. This fish has also been taken at Gnari Khorsum by Schlagintweit. 



1 I am very dubious of these specimens, and hardly think they can have been obtained from waters that flow into the Yarkand 

 River, as the adults have not been obtained thence. The adult, however, has been taken in the Oxus ; and I find by the diary that 

 on the day the specimens in question were captured the camp was at Sarikol, a few miles from a valley where a stream enters the 

 Aksu Elver, a tributary of the Oxus. 



C 



