556 Mr. G. A. Boulenger on Fishes 



width; width of mouth equal to or a little less than inter- 

 orbital width ; vomero-palatine teeth forming an uninter- 

 rupted band, which is a little narrower than the band of 

 prsemaxillary teeth. Nasal barbel \ to % length of head, 

 maxillary f to f, outer mandibular i, inner mandibular 

 \ to }. Gill-rakers moderately long, 9 to 12 on lower part 

 of anterior arch. Dorsal I 6, entirely in advance of ventral, 

 about twice as distant from caudal as from end of snout, its 

 spine slender, § to § length of head, very feebly serrated 

 behind. Anal 55-59. Pectoral not reaching ventral, its 

 spine stronger and a little longer than that of dorsal, inner 

 border feebly serrated. Caudal deeply forked, with pointed 

 lobes. Caudal peduncle as long as deep or a little deeper 

 than long. Brownish above, white below ; a dark, ill- 

 defined blotch on each side above the pectoral fin ; vertical 

 fins brownish, with a light streak along the anal. 



Total length 240 mm. 



Three specimens from the Quanza River at Cunga : one was 

 caught in the act of swallowing a full-grown Odaxothrissa 

 ansorgii. 



Native name: Buanga. 



The longer nasal barbel precludes the identification of this 

 fish with the E. bocagii, from the Dondo River, described 

 and figured by Guimaraes. 



36. Eutropius seraoi, sp. n. 



Depth of body 4 to 4^ times in total length, length of 

 head 4§ to 5 times. Head 1^ to 1? ( times as long as broad ; 

 snout broad, as long as or a little longer than eye, projecting 

 slightly beyond lower jaw ; eye perfectly lateral, 3^ to 4 

 times in length of head, 2^ to 3 times in interorbital width ; 

 width of mouth equal to interorbital width; vomero-palatine 

 teeth forming an uninterrupted band, which is narrower than 

 the band of prsemaxillary teeth. Nasal barbel | to f length 

 of head, maxillary 1£ to H, outer mandibular f to 1, inner 

 mandibular i to |. Gill-rakers rather long and closely set, 

 15 to 18 on lower part of anterior arch. Dorsal I 6, entirely 

 in advance of ventral, 2} y to 2i times as distant from caudal 

 as from end of snout, its spine slender, § to f length of head, 

 very feebly serrated behind. Anal 16-53. Pectoral reaching 

 ventral or not, its spine stronger and a little longer than 

 that of dorsal, inner border feebly serrated. Caudal deeply 

 forked, with pointed lobes. Caudal peduncle as long as deep. 

 Back brownish, sides and belly silvery white; a more or less 

 distinct dark lateral stripe; a dark, ill-defined blotch on each 

 side above the pectoral fin; fins whitish. 



