140 TELEOSTEI. PUYSOSTOMI. 



which is narrow, short, half as wide at its base as it is long, 

 and with a long interspace between it and the basal bone of the 

 dorsal fin. Barbels the nasal reach to a short distance behind 

 the posterior edge of the orbit ; the maxillary to the base of the 

 pectoral fin, whilst the two mandibular pairs are a little longer 

 than the head. Teeili on the vomer and palate form an almost 

 uninterrupted semilunar baud. Fins dorsal spine nearly as long 

 as the first ray, or as the head excluding the snout, weak, very 

 finely serrated in front, more coarsely behind. Pectoral spine 

 weak, nearly or quite as long as the head, rough externally, serrated 

 internally. Ventral small, one third as long as the head. Caudal 

 deeply forked. Caudal peduncle as long as deep at its base. 

 Colour silvery, lightest along the sides and below ; dorsal, pectoral, 

 and caudal fins darkest at their margins. 



In the form called P. megalops the maxillary barbels extend to 

 beyond the origin of the anal fin, but I do not see any other 

 difference. 



Hcib. Eivers of Sind, Orissa, the Jumna, and rivers of Bengal 

 and Assam. Attaining about 6 or 8 inches in length. 



149. (5.) Pseudentropius sykesii. 



Schilbe sykesii, Jertkm, Mad. Jour. L. Sc. xv, 1849, p. 335. 

 Pseudeutropius sykesii, Day, Fish. India, p. 473, pi. cix, iig. 5 (see 

 synon.). 



Nah-kelletee, Tarn. 

 B.viii-ix. D.l/7|0. P. 1/9. Y.6. A . 35-37 (3/32-34). C. 17. 



Length of head 6, of caudal fin 6, height of body 6 in the total 

 length. Eyes diameter 3 to 3^ in length of head, 1 diameter 

 from end of snout, and lj apart. Head rather higher than wide, 

 its greatest width equals its length excluding the snout. The 

 angle of the mouth is on a level with the lower edge of the orbit. 

 Upper jaw slightly the longer; posteriorly it reaches two thirds of 

 the distance between the snout and front edge of the orbit. The 

 median longitudinal groove on the upper surface of the head 

 reaches to the base of the occipital process, which is narrow. 

 Barbels the nasal pair reach to the front edge of the orbit, the 

 maxillary pair to the end of the pectoral or middle of the ventral ; 

 the mandibular are as long as, or a little longer than the head. 

 Teeth those on the palate in two distinct patches. Fins- 

 dorsal spine slender, as long as the head excluding the snout, and 

 finely serrated posteriorly ; adipose fin small. Pectoral spine 

 stronger and slightly longer than that of the dorsal, smooth 

 externally, denticulated internally with about twenty-two teeth. 

 Ventral commences just behind the vertical from the last dorsal 

 ray ; caudal forked, lower lobe slightly the longer. Colour bluish 

 silvery along the back, becoming silvery white on the sides and 

 below. Dorsal and caudal grey, the other fins white. 



Hob. Western coast of India in fresh water ; attaining about 6 

 inches in length. 



