2. MASTACEMBELUS. 541 



1. Mastacembelus pancalus. 



MacrogDathus pancalus, Biwh. Ham. Fish. Ganq. p. 80. pi. 2i!. ficr. 7. 

 Mastacembelus pancalus, Cuv. S( Vol. viii. p. 455 ; Bleek. Verhaml. 



Batav. Genootsch. xxv., Beng. en Hindost. p. 98. 

 ? Mastacembelus punctatus, Cuv. ^ Val. \\n. p. 463. 



D. 25-26 I 35^0. A. 36-40. 



The cleft of the mouth extends scarcely to the vertical from the 

 nostril. Vertical fins not contiguous. Eody brown, with small, 

 round, lighter dots ; vertical fins whitish, dotted with black. 



Fresh waters of Bengal. 



a-c, d. Half-grown. Ganges. Presented by G. R. Waterhouse, 



Esq. — Types of the species. 

 e. Half-grown. Ganges. From Mr. MacClelland's Collection. 

 /, g, h. Half-grown. Calcutta. From the Collection of Messrs. von 



Schlagintweit. 

 i~k, l-p, q. Adult, half-grown, and young. Bengal. 



2. Mastacembelus zebrinus. 



Blyth in Joi/rn. As. Soc. Beng. 1859, p. 281. 



Twenty-eight or twenty-nine dorsal spines. Tail detached from 

 the dorsal and anal fins. Pale brown, deeper along the back, and 

 marked throughout (more distinctly in the young) with dusky trans- 

 verse stripes, alternating with fainter stripes more or less regular, 

 which latter are often double or more or less divided, and are set off 

 by the narrow pale interspaces. Dorsal and caudal fins minutely 

 striated ; the anal with broad stripes, as on the sides. {BJ.) 



Maulmein. 



3. Mastacembelus aleppensis. 



Simak-el-inglese, Ingely, Russell, Nat. Hist. Aleppo '\\.2nA edit. CLond. 



1794), p. 208. pi. 6. 

 Mastacenibelus, sp., Gronov. Zoophyl. no. 402. tab. 8 a. figs. 1, 2. 

 Ophidium simak, Walb. Artedi, iii. p. 159. 



mastacembelus, Shaw, Zool. iii. p. 71. 



Rhynchobdella haleppeusis, Bl. Schn. p. 480. 

 Mastacembelus aleppensis, Cur. df Va/. viii. p. 454. 



syriacus, Grouov. Syst. ed. Gray, p. 172. 



? Macrognathus caudatus, MacClell. Calc. Journ. Nat. Hist. ii. p. 586. 

 D. 32-34 (35) | 80. A. 3 | 80. 

 The maxillary extends to the vertical from the anterior margin of 

 the orbit. Vertical fins continuous, sometimes a notch between 

 them. Above blackish, vaiiegated with dark-yellow spots ; yellowish 

 below ; anal fin yellow near its commencement, the rest, like the 

 dorsal and caudal, being spotted with black. 

 Eiver Kowik. ? Afghanistan. 



a, b, c. Types of the species : bleached. Aleppo. From A. Russell's 

 Collection. 



d. A fourth specimen, with thirty-five dorsal spines, and of a unifonn 

 brownish -black colour, is not specifically diff'erent from the typi- 

 cal individuals ; it was received from the East India Company. 



