SILUKID.E. 



317 



25 a. SYNODONTIS ANSORGII. 

 Bouleng. Ann. & Mag. N. H. (8) vii. 1911, p. 375. 



Depth of body 3 to 3^ times in total length, length of head 3f to 

 4 times. Head a little longer than broad, granulate above from between 

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

 lateral, 3| (young) to 4^ times in length of head, 1^ to If times in 

 interorbital width ; lips moderately developed ; proema\illary teeth 

 forming a short and broad band ; movable mandibular teeth j to -J 

 diameter of eye, 60 to 80 (50 in young) in number. Maxillary barbel 

 with a broad marginal membrane in its basal third, 1 to 1^ times length 



Fi-r. 187. 



Synoduntis ansorgii. 

 Type. |. 



of head, reaching between anterior fourth and posterior third of pectoral 

 spine ; outer mandibular barbel 1^ to 2 times as long as inner, former 

 with long slender branches, latter with tubercular ramifications. Gill- 

 opening not extending downwards beyond root of pectoral spine. 

 Occipi to-nuchal shield granulate like the occiput, obtusely tectiform, 

 1| to If times as loug as broad, posterior processes rounded or obliquely 

 truncate. Humeral process much longer than broad, granulate, not 

 keeled, obtusely pointed, extending as far or not quite so far as occipito- 

 nuchal process. Dorsal I 7 ; spine nearly straight, as long as or longer 



