BATHYBATES. 441 



of head, equal to interocular width; mouth not extending to below 

 anterior border of eye ; 4 or 5 series of teeth in upper jaw, 3 in lower ; 

 8 or 9 series of scales on the cheek. Gill-rakers short, 12-13 on lower 

 part of anterior arch. Dorsal XV 14 ; spines rather feeble, subequal 

 from the fifth or sixth, about | length of head, penultimate a little 

 shorter than last ; longest soft rays about J length of head. Anal 

 HI 14-15; spines feeble, third barely f length of longest dorsals. 

 Pectoral f length of head, not extending to vertical of origin of anal. 

 Ventral § the distance between its base and vent. Caudal deeply 

 notched. Caudal peduncle twice as long as deep. Scales 120- 

 125 1 ~; lateral lines jjpg. Brownish above, whitish beneath, with 4 

 or 5 dark brown longitudinal bands on each side ; dorsal with blackish 

 spots ; ventrals and anal yellow. 



Lake Tanganyika. — Type in Congo Museum, Tervueren. 

 1 . One of the types. Kilewa Eay. Dr. L. Stappers (C). 



5. BATHYBATES FASOIATUS. 

 .Bouleng. Ann.& Mag. N. H. (7) vii. 1901, p. 3, Poiss. Bass. Congo, p. 430 (1901), 

 and Tr. Zool. Soc. xvi. 1901, p. 153, pi. xvii. fig. 2 ; Pellegr. Mem. Soc. 

 Zool. Fiance, xvi. 1901, p. 365 ; Bouleng. Tr. Zool. Soc. xvii. 1906, p. 564 ; 

 Steind. Sitzb. Ak. Wien, cxx. i. 1911, p. 1175. 



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

 3| times. Head 2^ to 2-| times as long as broad ; snout with convex 

 upper profile, much longer than broad, as long as postocular part of head; 

 lower jaw projecting; eye If to 2 times in length of snout, 4 to 5 times 

 in length of head, lj to 1| times in interorbital width; mouth not 

 extending to below anterior border of eye; 4 series of teeth in upper jaw, 

 3 in lower; 8 to 11 series of scales on the cheek. Gill-rakers moderately 

 long, 16 to 19 on lower part of anterior arch. Dorsal XVI-XVII 16-17; 

 spines rather feeble, subequal from the fifth, or penultimate a little 

 shorter than last, about \ length of head; longest soft rays about -^ length 

 of head. Anal III 17-1 8 ; spines feeble, third shorter than longest dorsals. 

 Pectoral f length of head, not extending to vertical of origin of anal. 

 Ventral not J as long as the distance between its base and vent. 

 Caudal deeply notched. Caudal peduncle 2 to 2| times as long as deep. 

 Scales as in B. ferox, but smaller still, 140-150 ^^ ; lateral lines ^zjg. 

 Brownish above, white beneath ; a series of large, rounded, blackish 

 spots on each side of the back above the lateral line, alternating with a 



