72 



CYPEIJVODONTID^. 



34. HxVrLOCHILUS AOUTICAUDATUS. 

 IlajdocJiilus senegalensis, var. acuticaudata, Pellegr. Bull. Soc. Zool. France, 

 xxxviii. 1913, p. 84. 



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

 3|- 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 raillim. 



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



35. HAPLOGHILUS LONGIVENTKALIS. 

 Bouleng. Ann. & Mug. N. H. (8) viii. 1911, p. 266. 

 Haplocldlus sinlm^gyrpMs (non A. Dum.), Arnold, "Wocli. Aq. Terr. 1911^ p. 558, 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 ; 



Pip. 59. 



Haplocliilus longiventralU. 

 6 ? , types, Old Calabar. 



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

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

 priEorbital barely I 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 * to f length of head. Anal 15-16. Pectoral 

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

 i 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 



