566 ME. G. A. BOULENGER ON A COLLECTION 



with small ctenoid scales ; two lateral lines, the upper complete. Dorsal with 17 or 

 18 spines, anal with 3. Vertebrae 38 (19 + 19), 



The presence of a single series of teeth distinguishes this genus from Paratilapia, 

 with which it is connected by P. stenosoma. 



53. Haplotaxodon mickolepis, sp. n. (Plate XXXVIII. fig. 2.) 



Depth of body 3^ to o^ times as long as deep, length of head 3^ to 3|- times. Snout 

 much shorter than the eye, chin very prominent ; eye very large, 2f to 3 times in 

 length of head (chin included), its diameter much greater than interocular width ; 

 maxillary not extending to below anterior border of eye ; two series of scales on the 

 cheek ; opercle scaly. Gill-rakers long and slender, closely set, 18 to 20 on lower part of 

 anterior arch. Dorsal XVII-XVIII 11-12 ; spines strong, equal in length from the 9th 

 or 10th, ^ length of head ; longest soft rays about f length of head. Anal III 9 ; spines 

 very strong, 3rd longest, ^ length of head. Pectoral acutely pointed, slightly shorter 

 than head, not reaching origin of anal. Ventral produced into a filament extending 

 a little beyond origin of anal. Caudal peduncle twice as long as deep. Caudal deeply 

 notched. Scales 70-77 ;-^; lateral lines ||=^ ; 4 or 5 series of scales between the 



lateral lines in front. Olive or grey above, shading off to silvery white below ; dorsal 

 and caudal grey-brown, with yellowish-white large round spots ; anal and ventrals 

 white, tinged with yellow. 



Total length 210 millim. 



One specimen from Niamkolo (native name Liukonko, plural Makonko), one irom 

 Kasawa, and one from Kasanga (native name Lukoko). 



54. Pblmatocheomis poltlbpis Blgr. (Plate XXXVII. fig. 2.) 



Mtondwe Bay and Niamkolo, four specimens, measuring from 102 to 300 inillim. 

 Dr. Cunnington measured one of 435 millim. Dorsal XV 13-15 ; Anal III 8 ; gill- 



7— R 



rakers 12-14 on lower part of anterior arch ; Scales 58-67 3 ; Lateral lines ^r^^- In 



16-19 ^^* 



the largest specimen the snout is once and two-thirds as long as the eye, which is 



4 times in the length of the head. The smallest specimen (here figured) is remarkable 



in having the 3rd to 5th spines of the dorsal longest, half the length of the head. The 



coloration is described by Dr. Cunnington as greyish or brownish grey above, white 



below, with or without five or six inconspicuous vertical darker stripes on the body ; 



the markings on the dorsal fin brown ; patches of red at the angle of the jaws and at 



the roots of the paired fins ; a red vertical stripe on the gill-cover ; anterior rays of 



dorsal tipped with red. 



According to Dr. Cunnington, the female carries eggs in her mouth. 



Native names : Sanga and Kanga. 



