4GT} 



SILUEID.E. 



47. SYNODONTIS FILAMENTOSUS. 



Bouleng. Ann. & Mag. N. H. (7) viii. 1901, p. 10, and Fish. Nile, p. 371, pi. Ixix. 



(1907). 



Depth of body equal to length of head, 4 times in total length. Head 

 1^ times as long as broad, feebly rugose between eyes and on occiput ; 

 snout rounded, as long as postocular part of head ; eye supero-lateral, 

 o^ times in length of head, Ij times in interorbital width; occiput 

 simply convex ; lips moderately developed ; praemaxillary teeth rather 

 few, forming a short and broad band ; movable mandibular teeth barely 

 J length of eye, 20 in number. Maxillary barbel broadly margined at 

 the base, -f length of head, extending to base of pectoral fin ; mandi- 



Eiji. 345. 



/^^^T^ 







Sij nodotitts Jilainentusus. 

 Ty,)e(F. N.). .|. 



bular barbels with numerous lonix ramified branches, outer 1^ times as 

 long as inner. Gill-opening not extending downwards beyond root of 

 pectoral fin. Occipito-nuchal shield slightly rugose, obtusely tectiform, 

 Ig- times as long as broad, posterior processes rounded. Humeral 

 process a little longer than broad, flat, rounded behind, extending as 

 far back as occipito-nuchal process. Dorsal I 7 ; spine strong, feebly 

 serrated behind, striated in front, as long as head, with a filamentous 

 prolongation exceeding it in length. Adipose dorsal 4-^ times as long 

 as deep, twice as long as its distance from rayed dorsal; Anal 1\ 7, 



