86 siluridj:. 



long as the occipital process ; a suture crosses its middle, 

 and there is another near the extremity of each of its 

 lateral portions. Dorsal fin as high as the body ; dorsal 

 spine slightly serrated behind, as long as the head with- 

 out snout. Pectoral spine stronger, and rather longer, 

 than that of the dorsal fin, serrated along both edges, 

 much more strongly along the interior than along the 

 exterior. Adipose fin as long as the dorsal. Cleft of the 

 mouth rather wide, transverse, with the upper jaw longest ; teeth 

 on the palate \^lliform, in a rather narrow subcrescentic ,„,».3r.>w>,,_^ 

 band. The median groove on the upper surface of the *^'^^!^r 

 head extends nearly to the base of the occipital process. 

 Barbels slender ; nasal barbels half as long as the head, maxillary 

 barbels extending beyond the root of the pectoral. 



China. 

 a. Six inches long. China. Presented by Dr. A. Giinther. 



4. Pseudobagrus brachysoma. 



D. 1/5. A. 20. P. 1/7. 



The height of the body is nearly equal to the length of the head, 

 which is contained thrice and a quarter in the total (without caudal). 

 Head granulated above. The occipital process is small, triangular, 

 similar to, but shorter than, the basal bone of the dorsal spine ; the 

 median groove on the upper surface of the head does not extend 

 backwards beyond the level of the orbit. Cleft of the mouth rather 

 wide, with the jaws subequal anteriorly. The maxillary does not 

 extend to the orbit. Teeth on the palate villiform, in a very narrow, 

 transverse, subcrescentic band. Barbels slender, shorter than the 

 head ; nasal barbels half as long as the head. The diameter of the 

 eye is less than the extent of the snout, one-fifth of the length of the 

 head, and two-fifths of the width of the interorbital space. Dorsal 

 fin as high as the body ; dorsal spine rather slender, slightly serrated 

 behind, two-thirds of the length of the head ; (pectoral spine broken ;) 

 adipose fin shorter than dorsal: anal with the inferior margin rounded; 

 caudal deeply forked. A large black ocellus, edged with white behind 

 the shoulder ; a blackish streak along each caudal lobe. 



Cochinchina. 



a. Skin, 5 inches long. 



33. LIOCASSIS. 



Leiocassis, Bleek. Prodr. Silur. p. 139. 



A rather long adipose fin ; a short dorsal fin with a pungent spine 

 and with seven soft rays ; anal fin short, with less than twenty rays. 

 Barbels eight. No moveable labial teeth ; teeth on the palate in a 

 continuous band. The upper jaw is the longer. Eyes below the 

 skin ; no free circular fold round the orbit. Dorsal spine denticulated, 

 the teeth not pointing upwards ; caudal forked ; ventral with six rays. 



East Indian Archipelago ; Japan. 



