574 MR. G-. A. BOULENG-ER ON A COLLECTION" 



77. Cunningtonia longiventkalis, sp. n. (Plate XLI. fig. 2.) 



Depth of body equal to length of head, 3 times in total length. Snout broad, very 

 convex, shorter than the eye, which is 2|- times in length of head and equals inter- 

 ocular width ; maxillary extending to below anterior border of eye ; 2 or 3 series 

 of small scales on the cheek ; large scales on the opercle. Gill-rakers rather 

 short, 13 on lower part of anterior arch. Dorsal XIII 13; spines weak, subequal 

 from the 7tb, nearly \ length of head ; posterior soft rays produced, \ or -§• length of 

 head. Anal III 8-9 ; spines weak, 3rd \ length of head ; soft rays produced like the 

 dorsals. Pectoral acutely pointed, as long as head, reaching beyond origin of anal. 

 Ventral produced into a very long filament, nearly twice as long as head. Caudal 

 peduncle once and \ as long as deep. Caudal with deep crescentic notch. Scales 

 38 jAtk', lateral lines j^jg- Bluish black above, bright silvery beneath ; fins blackish. 



Total length 110 millim. 



Two specimens from Niamkolo. Native name : Kalilolilo. 



This fish bears a striking resemblance to Tilapia boops Blgr., in which, however, 

 the dentition is very different and the maxillary bone is almost concealed when the 

 mouth is closed, and the vertebrae are fewer (16 + 1-6). 



78. Eketmodus cyanostictus Blgr. 



Two specimens from Niamkolo Bay and one from Sumbu. Native name : Kamfoto. 



Dr. Cunnington describes the colour as dark brownish grey with a number of 

 scattered spots of a brilliant blue. 



The specimen from Sumbu, a female measuring 75 millim., contained developing 

 embryos in the mouth ; some of them dropped out before the specimen could be 

 preserved. 



79. Xenocheomis hecqui Blgr. 



A single specimen from Moliro. Confounded by the natives with the following- 

 species under the name of Komangingi. 



80. Plecodus paradoxus Blgr. 



Two specimens from Kasakalawe (native name JSkanka), two from Niamkolo 

 (n. n. Nswepa), one from Sumbu and one from Moliro (n. n. Komangingi). 



As this remarkable fish was only known from young and defective specimens, a new 

 description from the material now at hand seems desirable. 



Depth of body nearly equal to length of head, 3^ to 4 times in total length. Snout 

 short and convex, as long as the eye in the adult, shorter in the young ; diameter of 

 eye 3 to 3-|- times in length of head, once to once and |- in interorbital width ; mouth 



