286 



SILUKID^E. 



91-93. Ad. & hgr. 



94. Yg. 



95. Yg. 



96-97. Yg., types of 

 E. obtusirostris. 



Cameroon. 



Ogowe. 



Banzyville, Ubanglii. 



Mr. Salmin (C). 

 Miss Kingsley (C). 

 Ciipt. Royaux (C). 



4. EUTROPIUS GRENFELLI. 



Bouleng. Ann. Mus. Congo, Zool. i. p. 137, pi. 1. fig. 1 (1900), and Poiss. Bass. 

 Congo, p. 270 (1901) ; Pellegr. in Chevalier, Afr. C. Franc, p. 449 (1907), 

 and Bull. Soc. Philom. (9) x. 1908, p. 187. 



Depth of body 3^ to 4 times in total length, length of head 5 to 5f 

 times. Head If to 1^ times as long as broad; snout broad, projecting 

 slightly beyond mouth, as long as or a little longer than eye ; latter 

 perfectly lateral, 3^ to 4 times in length of head, 1^ to 2 times in 

 interorbital width ; width of mouth equal to interorbital width ; vomero- 

 palatine teeth forming an uninterrupted band, which is as broad as or a 

 little narrower than the band of prsemaxillary teeth. Nasal barbel \ to 



Fig. 233. 



Eutropius grenfelli. 

 Type (A. M. C). |. 



^ length of head, maxillary barbel f to f ; inner mandibular barbel ^ to 

 \ length of outer, which measures f to ^ length of head. Gill-rakers 

 moderately long, widely set, 7 to 9 on lower part of anterior arch. 

 Dorsal I 6, partly in advance of ventrals, If to 2 times as distant from 

 caudal as from end of snout ; its spine slender, feebly serrated behind, 

 as long as head, produced into a filament. Anal 52-53, 4 anterior 

 rays simple, the following gradually decreasing in length. Pectoral 

 reaching ventral, its spine feebly serrated on inner side and stronger 



