FAMILY, I— SILURID^. 473 



Lengtli of head 6| to 6, of caudal 6^ to 6, height of body 6| to 6 in the total length. Eyes — lateral and 

 very slightly on the lower surface of the head : each with a broad, circular, adipose Ud, diameter 3 to 3f in the 

 length of head, 3/4 of a diameter from end of snout, and 1 apart. The greatest width of the head is rather 

 above 2/3 of its length. Jaws compressed, the upper slightly the longer, the cleft reaches nearly or quite 

 to below the front edge of the eye : the width of the gape equals 1/3 of the length of the head. The median 

 longitudinal groove on the head extends to the end of the occipital process 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. Teeth — on the vomer and palate 

 form an almost uniaterrupted semilunar band. Fms — dorsal spine nearly as long as the first ray, it is weak, 

 as long as the head excluding the snout, very finely serrated anteriorly, more coarsely posteriorly. Pectoral 

 spine weak, nearly or quite as long as the head, rough externally, serrated internally. Ventral small, 1/3 as 

 long as the head. Caudal deeply forked. Caudal peduncle as long as deep at its base. Colours — silvery, 

 lightest along the sides and below : dorsal, pectoral and caudal fins darkest at their margins. 



In P. megalops, the maxillary barbels extend to beyolid the origin of the anal fin, but I do not see any 

 other difierence. 



Bagrus Buchanani, Val. in Jacq. Voy. Ind. Orient, belongs to this Genus, as I convinced myself on seeing 

 the type specimen, but my notes on which I have mislaid. I think it was this species but am in doubt. 



Habitat. — ^Rivers of Sind, Orissa, the Jumna and rivers of Bengal and Assam, attaining about 6 or 8 

 inches in length. The figure of this fish is on Plate cviii, fig. 6, not Plate cix, as stated on the last page. 



5. Pseudeutropius Sykesii, Plate CIX, fig. 5. 



SaMlbe Syhesii, Jerdon, M. J. L. and Sc. 1849, p. 335. 



Pseudeutropius Mitchelli,* Giinther, Catal. v, p. 59. 



Fseudeidropius Syhesii, i)ay, Proc. Z. S. 1865, p. 289, and Fishes of Malabar, p. 191. 



Nah-helletee, Tam. 



B. viii-ix, D. i I 0, P. 1/9, V. 6, A. 36-37 (-^t^), C. 17. 



Length of head 6, of caudal 6, height of body 6 ia the total length. Eyes — diameter 3 to 3^ 

 in the length of head, 1 diameter from the end of snout, and It 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 2/3 of the distance between 

 the snout and front edge of the orbit. The median longitudinal groove on the upper surface of the head 

 reachfts to the base of the occipital process, which latter 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 

 ones 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. Colours — bluish-silvery along the back, becoming silvery-white on the 

 sides and below. Dorsal and caudal gray, the other fins white. 



EaUtat. — Western coast of India in fresh-water, it attains about 6 inches in length. 



6. Pseudeutropius atherinoides, Plate CIX, fig. 2. 



Silu/rus atherinoides, Bloch, t. 371, f. 1 ; Bl. Schn. p. 386. 



Pimelodus amguis and urua, Ham. Buch. Fish. Ganges, pp. 177, 180, 377, pi. 29, f. 69. 



Bagrus atherinoides, Cuv. and Val. xiv, p. 396 ; Bleeker, Beng. p. 66 ; Jerdon, M. J. L. and Sc. 1849, 

 p. 336. 



Bagrus angwis and mua, Cuv. and Val. xiv, pp. 393, 395 ; Bleeker, Beng. pp. 64, 56 ; Blyth, Proc. Asi. 

 Soc. Beng. 1868, p. 285. 



Paahyptertis atherinoides and trifasdatus, Swainson, Fishes, ii,- p. 306. 



Bagrus exodon, Bleeker, Hind. p. Ill (not Val.) 



Pseudeutropius atherinoides, Giinther, Catal. v, p. 68. 



Put-tul, and Ohel-lee, Punj. ; Ah-hee, Sind.; Put-tah-re, N. W. Prov. ; AMu-jella, Tel.; Battuli and 

 Bo-potassi, Ooriah ; Boh-dM-ah, (Pdtdsi, and Doyd, H. B.), Assam. 



B. vi, D. ^l^ I 0, P. 1/7, V. 6, A. A. 33-41 (^1^), C. 17. 



Length of head 6 to 54, of caudal 5, height of body 4i to 6| in the total length. Eyes— y^iih. free 

 orbital margins, no adipose lids, situated partially on the lower surface of the Tiead : diameter 21 to 3 in the 



* Dr. Giinther as a Recorder of facts, animadverted on my considering Ms well-determined! P. MitchelU, a synonym of 

 P. Sykesii, Jerdon, observing " if he cannot verify his assertion by the examination of the typical specimen, he has no rigHt to exchange 

 the name of a well-determined species for a doubtful one," (Zool. Record. 1865, p. 19a). Jerdon had described the species filteen 

 years before Dr. Giinther, and sufSciently well for my recognizing it at a locality where lie found it. 



o P 



