SyJs'ODONTIS. 



409 



8. SYNODONTIS OCELLIFER. 

 Bouleng. Proc. Zool. Soc. 1900, p. 514. 



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

 o| times. Head a little longer than broad, rugose above behind snout, 



Fi.'. 308. 



Synodontis ocelUfer. 



Type. 



which is obtusely pointed and considerably shorter than postocular part 

 of head ; eye supero-lateral, 5 times in length of head. If to 2 times 

 in interorbital width ; lips moderately developed ; praemaxillary teeth 

 forming a short and broad band ; movable mandibular teeth about ^- 

 diameter of eye, 20 to 30 in number. Maxillary barbel with a very 

 narrow marginal membrane at base, 1^ to If times length of head, 

 reaching between middle and extremity of pectoral spine ; mandibular 

 barbels with long slender branches, outer If to 2 times as long as inner. 

 Gill-openings not extending downwards beyond root of pectoral spine. 

 Occipito-nuchal shield rough like the occiput, obtusely tectiform, 1^ to 

 1^ times as long as broad, with obtuse or rounded posterior processes. 

 Humeral process longer than broad, granulate, without keel, sharply 

 pointed, not extending quite so far back as occipito-nuchal process. 



