On some FifsJies of the Family Poecllliclce. 37o 



root of caudal. Pectoral \ length of head, the spine serrated 

 on both sides. Ventral 1^ times as distant from caudal as 

 from end of snout. Caudal ^ ler.gth of head. Dark brown. 



Total length IfiO mm. 



A single specimen from Esamesa (Congo basin). 



Closely allied to C. macromystax, Gthr. 



Pelmatochromls krtbsnsis. 



Teeth in two series. Depth of body 3 times in total 

 length, length of head 3^ to 3^ times. Snout rounded, with 

 convex upper profile^ as long as eye, which is 3^^ to 3^ times 

 in length of head and equals interorbital width ; maxillary 

 extending to below anterior border of eye; 3 series of scales 

 on the cheek. Gill-rakers short, 10 or 11 on lower part of 

 anterior arch. Dorsal XVI-XVII 8-9 ; spines gradually 

 increasing in length to the last, which measures about ^ 

 length of head ; longest soft rays shorter than head. 

 Anal III 6-7; third spine nearly ^ length of head. Pectoral 

 f to f length of head. Ventral produced into a filament. 

 Caudal rounded-subacuminate. (Jaudal peduncle a little 

 deeper than long. Scales smooth, 27-29 f ; lat. lines i|^. 

 Olive above, whitish beneath ; a blackish opercular spot ; 

 soft dorsal often with a round black spot behind the last 

 spine; caudal sometimes with two black, light-edged ocellar 

 spots above ; outer edge of ventrals blackish. 



Total length 65 mm. 



Several specimens from the Kribi River. 



Closely allied to P. tceniatus, Blgr., and subocelladiSj 

 Gthr. 



XLVIII. — On some Fishes of the Family Poeciliidae. 

 By C. Tate Regan, M.A. 



1. A new Xiphophorus /ro»z Quatemala. 



Xiphojjhorus rachovit, sp. n. 



Depth of body about 3 in the length, length of head 4 to 

 4-|. Snout somewhat shorter than eye, the diameter of 

 which is 3 to 3^ in the length of head ; interorbital width 

 equal to the distance from eye to edge of operculum. 2G or 



Ann. ct; Mag. iV. JJist. Ser. 8. Vol. viii. 25 



