46 SILURIDiE. 



2. Callichrous ceylonensis. 

 D. 4. A. m. P. 1/14. V. 8. 



Dorsal fin very slender, as long as the head without snout ; the 

 anal fin terminates close to the caudal, but is separate from it ; caudal 

 fin deeply forked, with the lobes pointed, somewhat shorter than the 

 head. The pectoral is obtusely rounded, shorter than the head, and 

 extends to the origin of the anal fin ; its spine is rather slender, ser- 

 rated interiorly, three-fifths of the length of the head. The height 

 of the body is contained four times and two-thirds in the total length 

 (■\vithout caudal), the length of the head five times ; the greatest width 

 of the head equals its length without snout ; snout obtuse, rounded, 

 ■with the lower jaw prominent ; vomerine teeth in two distant, short, 

 and narrow bands. The maxillary barbels extend to the seventh anal 

 ray ; those of the mandible very slender, half as long as the head. The 

 diameter of the eye is one-fifth or one-sixth of the length of the head, 

 and one-third of the width of the interorbital space. Brownish olive, 

 minutely dotted with brown ; a blackish blotch immediately behind 

 the gill-opening. 



Ceylon. 



The largest specimen is 7k inches long. 

 a, b-c. Fine specimens. Purchased of Mr. Cuming. 



3. Callichrous chechra. 



Silurus chechra, Ham. Buck. Fish. Gang. p. 152. 



? Silurus microcephalus, Cuv. 8f Val. xiv. p. 365. 



Silurus indicus, M'Clell. Calc. Journ. ii. p. 583. 



Schilbe pabo, Sykes in Trans. Zool. Soc. li. p. 367 (not Ham. Bitch.). 



Wallago microcephalus, Bkek. Verh. Bat. Gen. xxv., Hindost. p. 110. 

 D. 4. A. 70. P. 1/14. V. 8. 

 Dorsal fin exceedingly narrow ; the anal terminates close to the 

 caudal, but is separate from it ; the pectoral extends to the origin of 

 the anal, and is rather shorter than the head ; its spine is serrated 

 along its inner edge, of moderate strength, and two-thirds of the 

 length of the head, which is less than the height of the body, and 

 contained five times and three-fourths in the total length ( without 

 caudal). The diameter of the eye is one-fifth of the length of the 

 head. The lower jaw strongly prominent ; vomerine teeth in two 

 separate bands of moderate width ; the maxillary barbel extends to 

 the end of the pectoral. Sides silvery ; the blackish spot is some- 

 what remote from the head, if distinct. 



River Kusi ; Dukhun ; Sindh ; Afghanistan. 

 a-b. Eight and a half to nine and a half inches long. Dukhun. 

 From Col. Sykes's Collection. — Tj'pes oi SchUhe pabo, Sykes. 



c. Adult : not good state. Madras Presidency. Presented by Capt. 



Mitchell. 



d. Half-grown. Sindh. From the Collection of Messrs. v. Schla- 



gintweit. 



e. Young. Afghanistan. From Mr. Griffith's Collection. 



/". Half-grown: bad state. India. Presented by General Hardwicke. 



