78 



CYPEINODONTID.E. 



42. HAPLOCHILUS SINGA. 

 Bouleng. Ann. Mus. Congo, Zool. i. p. 113, pi. xlvii. fig. 1 (1899), and Poiss. Buss. 

 Congo, p. 34G (1901). 

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

 Head flat above ; snout broad, as long as eye ; mouth directed upwards, 

 lower jaw projecting a little ; eye 3-| times in length of head, 1| times 

 in interorbital width ; prasorbital very narrow. Dorsal 8, originatmg 

 twice as far from eye as from root of caudal, above last rays of anal, 

 longest rays f length of head in male. Anal 14. Pectoral a little 

 shorter than head, extending a little beyond base of ventral; latter 

 a little nearer end of snout than root of caudal. Caudal forked, upper 

 and lower rays produced in the male. Caudal peduncle hardly longer 

 than deep. 27-28 scales in longitudinal series, 20 round body in front 



Fig. 65. 



Haploelnlus singa. 

 S , type (A. M. C). 



of ventrals; lateral line represented by a scries of pits. Olive-green, 

 most of the scales with a carmine spot ; fins greenish yellow, dorsal and 

 caudal with series of carmine dots. 



Total length 45 millim. 



Congo. — Type in Congo Museum, Tervueren. 



1. Ad. 

 2-3. Ad. 



Boma. 

 Lindi R. 



Dr. J. W. Todd (P.). 

 M. M. Storms (C.) ; 

 Brussels Museum (P.). 



5. PROCATOPUS. 



Bouleng. Ann. & Mag. N. H. (7) xiv. 1904, p. 20. 



Teeth unicuspid, in a band, outer largest. Lower jaw projecting 

 a little beyond upper. Body strongly compressed throughout; scales 

 rather large, smooth, exposed surface regularly hexagonal, more than 

 twice as deep as long on the middle lateral series. Dorsal fin shorter 

 and originating further back than anal ; latter with 14-17 rays. 

 Ventral fins far forward, almost below the base of the pectorals, which 

 are inserted very high up the sides. Vertebraj 29-30. 



A single species. 



