556 Mr. G. A. Boulenger on Fishes 



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

 orbital width ; voraero-palatine teeth forming an uninter- 

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

 prtemaxillary teeth. Nasal barbel i to | length of head, 

 maxillary i to |, outer mandibular \, inner mandibular 

 1 to 1. 'Giil-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, 3- to f 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 ill the act of swallowing a full-grown Odaxothrissa 

 ansoryii. 



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 4f 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 Avidth ; vomero-palatine 



teeth forming an uninterrupted band, which is narrower than 



the band of prsemaxillary teeth. Nasal barbel 5 to f length 



of head, maxillary 1^ to li, outer mandibular | 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, 21 to 2^ times as distant from caudal 



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



very feebly serrated behind. Anal 46-53. 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. 



I 



