SILUUID2E. 



159 



dibular to the middle of the pectoral, and the internal to the gill- 

 openings. Teeth in an uninterrupted creseentic band across the 

 palate. Fins dorsal spine moderately strong, as long as the head 

 posterior to the nostrils or angle of the mouth, finely serrated 



nteriorly in the upper fourth ; the adipose tin. commences just 

 ind the first dorsal, and the length of the base is from twice 

 to two and a half times that of the base of the first dorsal. Pectoral 

 spine much stronger than that of the dorsal, a little shorter, and 

 denticulated internally. Caudal deeply forked, the lobes having 

 filamentous prolongations. Air-bladdei large. Colour when 

 alive the lower surface is olive-green or yellow and the head white, 

 but after death it becomes purplish black over the body and fins ; 

 some white dots exist on the body. 



Hob. Itivers of Burma ; attaining a foot or more in length. 

 > 



168. (14.) Macrones montanus. 



Bagrus inontanus, Jerdon, Mad. Jour. L. Sc. xv, 1849, p. 337. 

 Macroues moiitanus, Day, Fish. India, p. 449, pi. ci, fig. 4. 



B. x. D. 1/7 | 0. P. 1/6. V. 6. A. 12 (3/9). C. 19. 



Length of head 5, of caudal fin 5, height of body 6 in the total 

 length. Eyes diameter 3^ to 4 in the 'length of the head, rather 

 above 1 diameter from the end of snout, and 11 apart. A very 

 slight rise in the profile from snout to base of first dorsal fin. 

 Greatest width of the head equal to its length behind the angle of 

 the mouth. Upper jaw slightly the longer; the width of the 

 mouth equal to two fifths of the length of the head. Upper surface 

 of the head roughened in granulated lines which extend on to the 

 occipital process. Median longitudinal groove extending to mid- 

 way between the eye and the base of the occipital process, which 

 is narrow, about four times as long as wide at its base, and reach- 

 ing the basal bone of the dorsal fin ; opercle with roughened 

 radiating lines ; shoulder-bone rather longer than deep at its base 

 and with roughened lines. Barbels the nasal extend to rather 

 behind the hinder edge of the eye, the maxillary to the anal fin, 

 the external mandibular to the end of the pectoral, the internal 

 are shorter. Teeth in an uninterrupted creseentic band across 

 the palate. Fins dorsal nearly as high as the body, its spine 

 rather weak, half as long as the head and posteriorly serrated ; 

 length of base of adipose dorsal one third more than that of rayed 

 fin, which equals that of the interspace. Pectoral spine strong, as 

 long as the head excluding the snout, and with about 16 strong 

 denticulations internally. Ventral does not reach anal ; upper 

 caudal lobe the longer. Colour silvery superiorly, with a tinge 

 of yellow on the under surface of the head and along the abdomen, 

 a bluish shoulder-spot, and a silverv line along the side ending in 

 a dark spot at the base of the caudal fin, one or two light bands 

 alonp the side above the lateral line ; fins tinged with green. 

 J/dl>. Wynaad range of hills and Manantoddy. 



