ENANTIOPUS. 449 



If times as long as eye, which is 3 (young) to 4 times in length of head 

 and equals or exceeds interorbital width ; mouth extending to between 

 nostril and eye ; 3 series of scales on the cheek. Gill-rakers short, 

 11 to 15 on lower part of anterior arch. Dorsal XIII-XV 15-17; 

 spines feeble, increasing in length to the last, which measures ^ to 

 J length of head ; last soft rays produced in the adult, at least § length 

 of head. Anal III 13-17; third spine J length of head. Pectoral as 

 long as or a little shorter than head, extending to vertical of origin of 

 anal. Ventral reaching origin of anal or a little beyond. Caudal with 

 deep crescentic notch. Caudal peduncle twice as long as deep. Scales 



3-4 '^''-31 



finely denticulate, 40-44 g^jQ ; lateral lines jyiyq. Grey or brown above, 

 with or without a pale blue spot on each scale, white beneath ; a lateral 

 series of dark spots may be present ; a dark opercular spot ; adult with 

 the chin and the branchiostegal membrane blackish ; a large dark spot 

 may be present in the middle of the spinous dorsal ; ventral and anal 

 edged with black in the adult ; male with large black and white ocelli 

 on the spinous dorsal and oblique dark bands on the soft ; caudal with 

 or without crescentic dark bands. 



Total length 135 millim. 



Lake Tanganyika. — Type in Congo Museum, Tervueren. 



1. Ad. I\Iuliro. Capt. Lemuire (C). 



2-3. Ad. „ Dr. ^\\ A. Cunnington (C). 



4-5. Ad. Mbete. 



G-7. Hgr. Kigoma. „ 



8. Ad. Seinburi. ,, 



9. Ad. liumongo. ,, 



10-12. Ad. Usiimbura. ProF. J. E. S. Moore (C). 



13. Skel. 



14. Ad. Tulo. Dr. L. Stappers (C). 



2. ENANTIOPUS OCHROGENYS. 

 Bouleng. Rev. Zool. Afr. iii. 1914, p. 444. 



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

 Head 2 to 2J times as long as broad ; snout with strongly curved upper 

 profile, as long as broad, as long as eye, which is 3 times in length of 

 head and J interorbital width ; mouth extending to between nostril and 

 eye; 3 series of scales on the cheek. Gill-rakers short, 10 or 11 on 

 lower part of anterior arch. Dorsal XIV 14-15; spines feeblp, 



