SYNODONTIS. 



437 



Depth of body 3 J to 4 iimes in total length, length of head 3 J to 3 J 

 times. Head a little longer than broad, granulate above ; snout 

 obtusely pointed, nearly ^ length of head ; eye supero-lateral, 4 J (young) 

 to G times in length of head, 2 to 2 J times in interorbital width ; lips 

 rather strongly developed ; movable mandibular teeth not i diameter 

 of eye, 50 to 55 in number. Maxillary barbel not margined, as long 

 as or a little shorter than head, extending slightly beyond base or to 

 anterior third of pectoral spine; outer mandibular barbel not quite 

 twice as long as inner, usually with simple branches, inner with 



Si/nodoiitis haiiiji. 

 L. Aziiifro. 4. 



ramified branches. Gill-opening not extending downwards beyond root 

 of pectoral spine. Occipi to-nuchal shield with granular rugosities, 

 not or but little longer than broad, obtusely tectiform, with rounded 

 posterior processes. Plumeral process obtusely keeled, much longer 

 than deep, acutely pointed, extending a little beyond occipito-nuchal 

 process. Skin villose on sides. Dorsal 1 6-7 ; spine as long as 

 or a little shorter than head (§ in young), striated, smooth or feebly 

 granulate in front, feebly serrated behind. Adipose dorsal o to oh times 



