8ILUUID.X. 191 



usually exists a patch of granulations above the upper edge of the 

 opercle on the head. Barbels rather longer than the head. 

 Teeth on the palate in two somewhat cresceritic patches con- 

 verging anteriorly. Fins dorsal spine as long as the head 

 excluding the snout, serrated in the upper portion anteriorly and 

 in the whole extent posteriorly. Pectoral spine somewhat stronger 

 than that of the dorsal, the fin reaches about halfway to the 

 ventral. Anal highest anteriorly, where its height is equal to half 

 the length of the head. Colour silvery, darkish superiorly, fins 

 tinged with red. 



Hub. Seas, estuaries, and tidal rivers of India to the Malay 

 Archipelago. A specimen in the Calcutta Museum is 14 inches 

 long. 

 t 



204. (2.) Osteogeniosus sthenocephalns. 



Osteogeniosus sthenocephalus, Day, Fish. India, p. 469, pi. cviii, 

 fig. 3. 



B. v. D. 1/7 | 0. P. 1/9. V. 6. A. 20 (5/15). C. 17. 



Length of head 4f , of caudal fin 5|, height of body 1\ in the total 

 length. Eyes diameter 6i in the length of bead, 2 diameters 

 from the end of snout, and 3 apart. The greatest width of the 

 head equals half its length ; the width of the gape of the mouth 

 equals half the length of the head. Occipital process three times 

 as long as wide at its base, its length equals one third of that of the 

 head. Median longitudinal groove rather wide and does not 

 extend quite to the base of the occipital process. Upper surface 

 of the head with a few granulations between the posterior end of 

 the median grooA'e and the base of the occipital process, which last 

 is roughened in ridges. Barbels as long as the head. Fins as 

 in the last species, except that the anterior portion of the anal fin 

 is as deep as the head (excluding the snout) is long. Colour 

 silvery, darkest superiorly. 



Hob. A single specimen captured at Moulmein. 



25. Genus BATRACHOCEPHALUS, Bleeker. 



Branchiostegals five. Gill-membranes united at the throat, 

 without a notch, not confluent with the skin of the isthmus. Cleft 

 of mouth wide ; lower jaw the longer. Eyes with a free circular 

 margin. Nostrils approximating, the posterior provided with a 

 valve. Barbels two, rudimentary, and inserted at the chin. Teeth 

 obtusely conical in either jaw, with an interspace between the 

 outer and the inner rows, in a broad longitudinal band on the 

 palate ; none on the vomer. Dorsal fin with one spine and seven 

 rays, inserted in advance of the ventrals ; adipose fin short. Anal 

 of moderate length, not confluent with the caudal, which is forked. 

 Ventral with six rays. Air-bladder not enclosed by bone. An 

 axillary pore. 



