PAKATILAPIA. 369 



length of head, equals interorbital width, and nearly 3 times pr8eorbit:il 

 depth ; mouth extending to below anterior border of eye ; teeth very 

 small, in 3 series, 50 to 60 in outer series of ujj,[oer jaw ; 2 or 3 scries 

 of scales on the cheek, width of scaly part not half diameter of eye. 

 Gill-rakers short, 14 to 16 on lower part of anterior arch. Dorsal 

 XIII-XIV 12-14; spines thin, slender, increasing in length to the 

 ninth or tenth, which measures a little less than ^ length of head. 

 Anal III 9 ; third spine f length of head. Pectoral as long as or a 

 little longer than head, extending to vertical ot origin of anal or a little 

 beyond. Ventral much produced, reaching caudal or nearly as far. 

 Caudal witli deep crescentic notch, the outer rays more or less 

 produced. Caudal peduncle 1^ to 1^ times as long as deep. Scales 

 denticulate, 60-64 j^jixgJ lateral lines .j^i^, the upper ext(>nding to the 

 caudal peduncle, or nearly to the base of the caudal. Bluish or olive 

 above, silvery white below; gill-cover yellow; yellow streaks may be 

 })resent on the body ; dorsal and anal with yellow streaks ; caudal 

 yellow, with dark upper and lower margins. 



Total length 135 millim. 



Lake Tanganyika. 



1-2. Types. Kinyamkolo. Prof. J. E. S. Moore (C). 



:i. Ad. Niamkolo. Dr. W. A. Cunniiigton (C). 



4.' Ad. Suinbu. „ 



5. Skel. „ „ 



41). PARATILAPIA STENOSOMA. 



Bouleng. Ann. & Mug. N. H. (7) vii. 11)01, p. 2, Tr. Zool. Soc. xvi. 1901, 

 p. 151, pi. xvii. fig. 1, and Poiss. Bass. Congo, p. 4.26 (11)01); Pellegr. 

 Mem. Soc. Zool. Prance, xvi. 1904, p. 272 ; Bouleng. Tr. Zool. Soc. xvii. 

 1906, p. 5G4. 



Depth of body nearly equal to length of head, 2f to 3 times in 

 total length. Head 2^ to 2f times as long as broad ; lower jaw pro- 

 jecting ; snout with straight or slightly convex upper profile, as long as 

 broad or slightly longer than broad, shorter than postocular part of 

 head, nearly as long as eye, which is 3J to 3J times in length of head, 

 equals interorbital width, and exceeds prseorbital depth ; mouth not 

 extending to below anterior border of eye ; teeth small, in 2 or 3 series, 

 00 to 100 in outer series of upper jaw ; 2 series of scales on the cheek, 

 width of scaly part f to § diameter of eye. Gill-rakers rather long and 

 closely set, 19 to 28 on lower part of anterior arch. Dorsal XV 13 ; 



