394 A RevUion of South- American Characid Fishes. 



Caudal peduncle nearly as long as head. Snout shorter than 

 eye, the diameter of which is 3 to 4 in tlie length of head ; 

 interorbital width 2^. 23 or 24 scales in a longiiudinal 

 series. Dorsal 10 ; origin equidistant from head and base 

 of caudal, or nearer head. Anal 11-12, originating a little 

 behind end of dorsal. Olivaceous ; a dark stripe from lower 

 jaw through eye to operculum ; a blackish spot on dorsal fin. 

 Amazon ; Guiana ; Colombia. 



1-2. 25 mm. (types). Para. Eigenmann. 



S-9. 25 mm. „ R. Aruka, Brit. Guiana. ,, 



10. 27 mm. „ Lama, „ „ „ 



11-12. 35-45 mm. „ Bogota. Cutter, 



In the smaller examples there is sometimes an indistinct 

 dusky band on the anterior part of the body and an indication 

 of a pale stripe above the dark one on the head. In the 

 larger ones, from Bogota, a silvery stripe from eye to caudal 

 fin separates a broad dark band below from the dark colour 

 of the back. 



4. Copeina carsevennensis, sp. n. 



Depth of body nearly equal to length of head, 4:^ to 4| in 

 the length of the fish. Caudal peduncle nearly as long as 

 head. Snout shorter than eye, the diameter of which is 2^ 

 to 2| in the length of head ; interorbital width 2^. 26 scales 

 in a longitudinal series. Dorsal 10; origin equidistant from 

 head and base of caudal, or a little nearer head. Anal 11-12, 

 commencing scarcely behind end of dorsal. Olivaceous ; 

 a dark stripe from lower jaw through eye to operculum ; a 

 black spot on dorsal tin, 



French Guiana. 



1-6. 25-33 mm. (types). Carsevenne. Paris Mus. (Coll. Geay). 



5. Copeina guttata. 



Pyrrhulina guttata, Steind. Sitzungsb. Akad. Wien, Ixxii. 1876, p. 15, 

 pi. ii. fig. 6; Eigenm. & Eigenm. Proc. Calif. Acad. (2) ii. 1890, 

 p. 112. 



Depth of body 3| to 4 in the length, length of head 4 to 4^. 

 Caudal peduncle much shorter than head. Diameter of eye 

 3^ in the length of head, interorbital width 2_^ to 2|. 23 or 

 24 scales in a longitudinal series. Dorsal 10; origin a little 

 behind base of pelvics. Anal 12. A silvery spot at the base 

 of each scale ; a dark spot on dorsal fin. 



R. Amazon. 



Total length 70 mm. 



