8 ME. Q. A. BOTTLENGEB ON THE [Jan. 15, 



freshwater fishes from S.E. Asia and South America, apparently 

 most nearly allied to the Centrarcliklce, bat distinguished from them 

 by the absence of the entopterygoid. 



The new genus here described is its first-known African 



representative. 



PoLYOENTEOPSis, gen. n. 



Body shorf, elevated, very strongly compressed; scales mode- 

 rately laige, ciliated. Lateral line incomplete, reduced to a few 

 tubes. Mouth large, extremely protractile, the ascending processes 

 of the premasillaries extremely long and extending to the occipital 

 region ; villiform bands of very small teeth in the jaws, on the 

 vomer, and on the palatines ; head for the greater part covered 

 with scales; praeorbital, prseopercle, and interopercle serrated; 

 opercle ending in a spine. Grill-membranes separate ; six branchi- 

 ostegals ; no pseudobranchise. Dorsal and anal fins nearly equally 

 developed, with numerous strong spines and the soft portion 

 much reduced. Ventrals below the pectorals, close together, with 

 a strong spine. Vertebrae 23 (10-f 13) ^ 



15. PoLYCEjsrTROPSis ABBREViATA, sp. n. (Plate III. fig. 2.) 



Depth of body twice in total length, length of head twice and a 

 half. Snout acutely pointed, chin slightly projecting ; diameter 

 of eye a little longer than snout or interorbital width : nearly one 

 third length of head ; maxillary extending to below posterior third 

 of eye ; siiborbital arch very slender ; 6 or 7 series of scales on the 

 cheek. 10 gill-rakers on lower part of anterior arch, the longest 

 nearly as long as gill-filaments. Dorsal XV^XV'I 11 ; spines in- 

 creasing in length to the fourth and decreasing from the seventh 

 or eighth, the longest half length of head and a little longer than 

 the soft rays. Anal similar, X 9. Pectoral obtusely pointed, half 

 length of head. Ventral longer, produced in a filament, extending 

 beyond origin of anal. Caudal truncate. Caudal peduncle 

 extremely short. Sq. 32-35 ^ ; lat. 1. 5-6. Pinkish brown, 

 marbled with darker ; spinous dorsal and anal dark brown, with 

 darker and lighter spots and edged with black ; ventrals blackish ; 

 base of soft dorsal, anal, and caudal blackish, edged with pink. 



Total length 68 millim. 



Two specimens. 



ClCHLID^. 



16. Hemichromis easciattjs Peters. 



17. Hemicheomis bimacuiatus Gill. 



18. Pelmatooheomis guentheei Sauv. 



{Hemichromis voltce Stdr. ; II. tersquamatus Gthr.) 



19. Pelmatocheomis ansoegii, sp. n, (Plate IV. fig. 1.) 

 Teeth in 2 or 3 series in each jaw, outer largest but rather 



small. Depth of body 2i to 2^ times in total length, length of 



' Nandus marmoratus has also 23 vertebree, but 134-10. 



