OF PISHES FEOM LAKE TANGANYIKA. 559 



last, which measures half the length of the head, and the pectoral fin measures two- 

 thirds the length of the head. The anal spines number constantly 8 ; one specimen 

 has 6 soft anal rays, the others having 5. The adult specimen is of a uniform dark 

 brown ; the other specimens, according to the collector's notes, were grey-brown or 

 olive above, shading to white beneath, the scales of the upper parts dark-edged ; the 

 dark bars on the body less distinct than in the type specimen ; the dorsal fin is tipped 

 with black, the pectorals are olive and the ventrals black. 



•37. Lamprologus hecqui Blgr. 



Two specimens from Xiamkolo Bay, taken in an empty ]S T eothanma shell, and three 

 from Mtondwe Bay. Total length 45-60 millim. Eegarded by the native fishermen 

 as adult, and called by them Kitota, JS'jjonga, and Mpama. 



Depth of body 3| to of times in total length. Dorsal XVIII-XIX 8-9; anal 

 VI-VII 7-8. Scales 52-56 ^ ; lat. 1. 2 t^. Gill-rakers rather long and slender, 



12 to 15 on lower part of anterior arch. Grey above, lighter below, with 8 or 9 dark 

 vertical bars on each side, or large blotches alternating with narrow bars ; a more or 

 less distinct dark round spot at the root of the caudal fin ; vertical fins with dark bars ; 

 dorsal fin and upper part of caudal with a pale border faintly edged with black, as in 

 L. callipterus. 



38. Lamprologus callipterus, sp. n. (Plate XXXVI. fig. 4.) 



Depth of body equal to length of head, 3^ to o\ times in total length. Snout 

 obtusely pointed, once and \ as long as eye, the diameter of which is contained 

 4 times in length of head and hardly equals interorbital width ; maxillary extending 

 to below anterior border of eye ; 6 or 8 large canines in front of each jaw, followed by 

 a moderately broad band of minute, villiform teeth ; lateral teeth small ; cheek entirely 

 naked or almost so ; operculum with large scales. Gill-rakers rather long, 10 to 12 

 on lower part of anterior arch. Dorsal XVIII-XIX 9, spines increasing in length to 

 the last, which measures nearly \ length of head ; soft dorsal acutely pointed, longest 

 ray f to f length of head. Anal VIII 7-8, last spine nearly as long as last spine of 

 dorsal ; the fin pointed like the dorsal. Pectoral rounded, about § length of head. 

 Ventral extending to origin of anal, or beyond. Caudal rounded. Caudal peduncle 



once and \ to once and \ as long as deep. Scales 38-40 j^jj ; lateral lines "' _,:!• 

 Brown or olive above, paler or whitish below, the scales edged with darker ; dor*al 

 fin with a yellow border finely edged with blackish, this border continued on the upper 

 third of the caudal ; vertical fins with numerous small round whitish spots. 



Three specimens, measuring from 90 to 125 millim. The largest is from Mpala, the 

 two others from Niamkolo. Native name : Zagezi and Miseke or Moseke. 



