ARPROTILAPTA. 



279 



caudal region ; scalps ctenoid ; two incomplete lateral lines. Teeth 

 small, with long slender shafts and expanded tricuspid crowns, in 

 two series in both jaws. Mouth inferior, transverse ; greater part of 

 maxillary bone concealed under the prseorbital. Dorsal with 14 spines, 

 anal with 3. Parietal and occipital crests moderately strong, extending 

 to between the orbits. Vertebrse 35 (16 + 19). 



Lake Tanganyika. 



Connected with Tilapia through T. loops. 



1. ASPROTILAPIA LEPTURA. 

 Bouleng. 11. cc, Tr. pi. xx. fig. 2 ; Pellegr. t. c. p. 354. 



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

 Head twice as long as broad ; snout as long as broad, subconical, 

 strongly projecting beyond the mouth, ^ length of head; e}e very 



Eig. HIO. 





-^fcJsg, 



^' 



Asj^n-otUapia Jejitura. 

 Type (Tr. Z. S. 1901). |. 



large, as long as snout and nearly twice interorbital width, 2| to 2| 

 times in length of head ; width of mouth f that of head ; SO to 40 

 teeth in outer row of upper jaw; 3 series of small scales on the cheek. 

 Gill-rakers very short, tubercle-like, 15 or 16 on lower part of anterior 

 arch. Dorsal XIV 14 ; spines slender and subequal, f length of head ; 

 soft rays a little longer. Anal III 8 ; third spine nearly as long as 

 dorsals. Pectoral a little shorter than head. Ventral reacliing vent. 

 (!audal deeply emarginate, crescentic. Caudal peduncle 3 times as 

 long as deep. Scales strongly denticulate, 38 jfj; lateral lines .jq. Brown, 

 darker on the snout and vertex; a blackish opercular spot; fins greyish. 



Total length 110 millim. 



Lake Tanganyika. 

 L Tvpo. Msainhii. Prof. J. E. S. Moore (C). 



2. Ad. L. Tangimjika. 



:'>. Skci. „ 



