152 TELEOSTEI. PIIT8OSTOMI. 



B.ix. D.l/7|0. P. 1/8-9. V.G. A. 12-15 (3-4/9-11). C. 17. 



Length of head 4 to 4|, of caudal fin 4 1,. height of body 5 to 5| 

 in the total length. Eyes diameter 5 to 6 in the length of head, 

 1 diameters from the end of suout, and 2 diameters apart. 

 Snout broad and slightly depressed, upper jaw somewhat the 

 longer. Greatest width of head equal to its length excluding the 

 Bnout, and one fourth broader than high. Upper surface of the 

 head granulated, its median longitudinal groove lanceolate, ex- 

 tending to opposite the hind edge of the orbit. Occipital process 

 rounded posteriorly and half longer than wide at its base, a con- 

 siderable interspace between it and the basal bone of the dorsal h'n. 



Fig. 64. Macroncs gulio. 



Barbels nasal shorter than the head, the maxillary reach to the 

 middle or nearly the end of the ventral fin, the external niandi- 

 bular are longer than the head or than the internal pair. Teeth 

 in a narrow, uninterrupted, crescentic band across the palate. 

 Fins dorsal spine half as long as the head, strong, anteriorly with 

 one or two teeth at its upper extremity, seri-ated posteriorly. 

 Anterior rays longer than the spine. Adipose dorsal with a short 

 base equalling about half of the interspace between the two fins. 

 Pectoral spine as long as the head excluding the snout, strong, 

 and denticulated internally. The ventral fin. does not reach the 

 anal. Upper caudal lobe the longer, inferior sometimes rounded. 

 Air-bladder heart-shaped, divided along its centre by a strong 

 partition, having a communicating orifice in its upper back part, 

 while the whole has many subdivisions internally. Colour lurid 

 bluish brown on the back, becoming dull white beneath ; fins, 

 especially on their outer halves, usually black ; maxillary barbels 

 mostly black, fish from fresh waters sometimes have them whitish 

 or white-tipped. 



As in the rest of the genus Macrones, the ova in this species are 

 small. Some specimens from the Hooghly have 11 branched anal 

 rays, and the maxillary barbels only reach the end of the pectoral 

 fin. 



