84 CLASS XIV. 



Brachystacus nob. Head depressed, broad; eyes small, superior. 

 Mouth transverse, with gape large. Teeth thin, crowded in the 

 jaws; palate edentulous. Branch iostegous membrane with seven 

 rays. Dorsal fins two, the anterior near the head, with first ray 

 strong, short; the posterior depressed, confluent with caudal, and 

 with a second anal at the apex of tail; the anterior anal fin separate 

 from the terminal fin. 



Sp. Brachystacus chaca, Platystacus chaca BuCHAN., Chaca 1 ophioides Y ALE'S C, 

 Hamilton Buchanan Account of the Fishes found in the Ganges, PI. 28, 

 %• 43) Valenciennes Hist. nat. des Poiss. xv. PI. 451 ; 9" long; found 

 by Bdchanan in Bengal. The Mijks- Museum at Leyden possesses also 

 specimens of this singular fish from Borneo. The colour is blackish. 



Callichthys L. (previously, species of Silurus Si/st. nat. ed. 12, 

 Cataphractus Lac, Swains, and Hojylisoma Swains.). Body lori- 

 cate at the sides, with a double row of scutes, naked below. 

 Mouth small, with teeth very small. Cirri four. Branchiostegous 

 membrane with five rays. Dorsal fins two, the second adipose, with 

 single ray. 



Sp. Callicthys asper Val., Silurus callicthys L., Tamoata Makcgeavi, Hist. 

 nat. Brasil. 1648, p. 151, Bloch Ichth.Ta,h. 377 ;■ — Call. longifilisVAL^SC, 

 GuEiiiN Iconoijr., Poiss. PI. 53, fig. 4. Fresh-water fishes from S. America; 

 they have no swimming-bladder. 



Doras Lac, Mystus SwAiNSON. Head mailed. Body at the 

 lateral line armed with a single row of carinate or aculeate scutes, 

 elsewhere naked. Teeth crowded, small, in both jaws, or in lower 

 alone. Cirri six. Branchiostegous membrane with 6 — 8 rays. 

 Dorsal fins two, second adipose. Bone of humerus ending in a 

 spine above the pectoral fin. 



Sp. Doras carinatus Val., Silurus carinatus L., Cuv. et Valenc. Hist, des 

 Poiss. XV. Tab. 442 ; Doras costatus Lac, Silurus costafus L., Geonov. 

 Mus. II. Tab. V. figs, i, 2, Bloch IcJdh. Tab. 376, &c. Fresh-water fishes 

 from S. America. 



Synodontis Cuv. Head mailed. Body naked. Teeth small, 

 conical in upper jaw; teeth of lower jaw compressed, thin, mobile, 

 recumbent, with incurved ascending apex. Cirri six; the four 

 inferior pinnate or ramose. Branchiostegous membrane with seven 

 rays. Dorsal fins two, the second adipose. Bone of humerus end- 

 ing posteriorly in a spine. First ray of pectoral fins very strong, 

 dentate. 



