72 



CYPIUNODONTID.E. 



:u. haploc;hilus acutic.^audatus. 



Ilajilocldlus ieiiegalensis, var. acuticaudata, Pellegr. Bull. Soc. Zool. France, 

 xxxviii. 11)13, p. 81. 



Depth of body 4| to 5 times in total length, length of head 3 to 

 of times. Head flat above ; snout as long as or a little shorter than 

 eye; mouth directed upwards; lower jaw feebly projecting; eye 

 3 to 4 times in length of head. Dorsal 9-10, originating twice as far 

 from head as from root of caudal, above posterior third of anal. Anal 

 15-16. Pectoral f to f length of head. Ventral reaching anal. 

 Caudal acuminate, as long as head. Caudal peduncle nearly as long as 

 deep. Olive-brown above, yellow beneath, with about 10 oblique dark 

 bars on each side. 



Total length 43 millim. 



Guidimoussi Pond, Lake Chad District. — Types in Paris Museum. 



35. HAPLOOHILUS LONGIVENTRALIS. 

 Bouleng. Ann. & Mag. N. H. (8) viii. 1911, p. 2G6. 

 llaploclnlus sp'ilarg>jrens (non A. Dum.), Arnold, Wocli. Aq. Terr. 1011, p. 55<S, fig. 



Depth of body 4^ to 5 times in total length, length of head 3 to 

 3^ times. Head flat above ; snout rounded, a little longer than eye ; 



Fig. 59. 



Haplochilas longiventrulh 

 6 2 J types, Old Calabar. 



mouth directed upwards, lower jaw slightly projecting ; eye 3^ to 

 3| times in length of head, If to 1| times in interorbital width ; 

 pricorbital barely \ diameter of eye. Dorsal 8-9, originating twice as 

 far from head as from root of caudal, above posterior third or fourth 

 of anal; longest rays J to f length of head. Anal 15-lG. Pettoral 

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

 \ as long as head in females, much produced and at least as long as 

 pectoral in adult males, equally distant from end of snout and from root 

 of caudal. Caudal rounded-acuminate, longer than head. Caudal 



