542 Mr. G. A. Boulenger ow Fishes 



Kneriidae. 



8. Xenopomatichtliys ansorgii, sp. n. 



Depth of body equal to length of head, 5^ times in total 

 leDgth. Snout rounded, nearly as long as eye, which is 

 perfectly lateral, visible frona below as well as from above, 

 3^ times in length of head and 1^ times in interorbital 

 width ; width of mouth equal to diameter of eye ; sides and 

 lower surface of head with conical horny tubercles ; cup- 

 shaped apparatus on operculum much larger than eye, 

 followed, on the scapular region, by a large lamellar pad 

 (18 or 19 lamellse). Dorsal III 7, originating at equal 

 distance from eye and from root of caudal, well behind 

 vertical of base of ventral. Anal III 8-9." Pectoral shorter 

 than head. Caudal deeply notched, crescentic. Caudal 

 peduncle half as deep as long ■^. Scales longitudinally 

 striated, 110-120 in lateral line, 16-18 between dorsal and 

 lateral line, 10-11 between lateral line and ventral. Pale 

 brownish above, yellowish beneath, with scattered dark 

 brown dots and a series of round blackish spots, connected 

 by a dark brown lateral band, just above the lateral line ; 

 fins uniform whitish. 



Total length 67 mm. 



Two specimens from the Luealla River at Lucalla. 



This fish, one of the most interesting of Dr. Ansorge^s 

 discoveries in Angola, shows Xenopomatichthys to be un- 

 questionably related to Kneria. X. ansorgii is easily dis- 

 tinguished from A", auricidatus, Pellegrin, by the longer body, 

 the number of branched ra} s in the dorsal (7 instead of 8) 

 and anal (8-9 instead of 6-7), and the number of scales in 

 the lateral line (110-120 instead of 60-65). 



Characinidse. 

 9. Alestes ansorgii, sp. n. 



Depth of body 3| to 4^ times in total length, length of 

 head 4^ to 5 times. Head If to 2:^ times as long as broad, 

 11 to I5 times as long as deep; snout as long as or shorter 

 than eye, which is lateral and 2i (young) to 3^ times in 



* In the description of X. mtriculatus in Brit. Mas. Cat. Afr. Fisli. i. 

 p. 172, '' Caudal peduncle half as long as deep" is a lapsits calami, and 

 should be corrected to " Caudal peduncle half as deep as long." 



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