286 



SILURID.^. 



1)1^03. A.l & hor. 

 ■94. Yg. 

 95. Yg. 



9G-97. Yg., typos o£ 

 E. ohtuslrodris. 



Cameroon. 



Ogowe. 



Banzyville, Ubanglii. 



9 



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. Frano. p. 449 (1907), 

 and Bull. Soc. Philom. (9) x. 1908, p. 1<S7. 



Depth of body SJ to 4 times in total length, lengtli of head 5 to 5J 

 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 prccmaxillary teeth. Nasal barbel \ to 



Fig. 233. 



Eatropias f/roifdll. 

 Type (A. M. C). f . 



i length of head, maxillary barbel f to | ; inner mandibular barbel J 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 lonw as head, produced into a hlament. 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 



