EIGENMANN: the freshwater fishes of BRITISH GUIANA 285 



Seventeen specimens, 27-34 mm. Konawaruk. (C. M. Cat. Nos. 1161a 

 (type of P. auratus) and 1162a-d; I. U. Cat. No. 11688.) 



Three specimens, 27 mm. Rockstone sand-bank. (C. M. Cat. No. 1163a; 

 I. U. Cat. No. 11689.) 



Eight specimens, 25-33 mm. Gkick Island. (C. M. Cat. No. 1664a-6; I. U. 

 Cat. No. 11690.) 



Head 3.75; depth nearly 5; D. 10; A. 11; five scales between dorsal and ven- 

 tral, twenty-three along a median series, ten in front of dorsal. 



Eye 3 in head, a little less than snout, greater than interorbital; upper jaw 

 projecting. 



Adipose fin over about middle of last anal ray; dorsal beginning behind the 

 vertical from the origin of the ventrals. Pectorals reaching half-way to middle of 

 ventrals, ventrals half-way to base of last anal ray. 



Mid-dorsal line from head to adipose chocolate, on either side of which is a 

 straw-colored stripe, confluent with a median line on the head to the tip of the snout. 

 A similar chocolate stripe on the sides, bounded below by another straw-colored 

 stripe, both concurrent with the back ; ventrad of the last is a chocolate band, widest 

 above tips of pectorals, reaching the vanishing point above the eye and below the 

 tip of the dorsal; a golden band from upper part of eye to upper caudal lobe, con- 

 tinued forward of eye as a red streak; a dark brown lateral band from tip of jaws 

 to tip of lower caudal lobe; a horizontal streak below the eye. Some scales below 

 the lateral band with a brown spot; two oblique, black cross-bands, one up and 

 back from last half of pectorals, the other up from before anal. Lower caudal lobe 

 black; base of upper caudal lobe and of anal red; anal blackish. Fins otherwise 

 hyaline. 



142. Poecilobrycon erythrurus Eigenmann. (Plate XXXVII, fig. 3.) 

 Poecilobrycon erythrurus Eigenmann, Ann. Carnegie Mus., VI, 1909, 44; Repts. 



Princeton Univ. E.xp. Patagonia, III, 1910, 427. 



Type, 33 mm. Rockstone sand-bank. (Carnegie Museum Catalog of Fishes 

 No. 1168.) 



Cotypes, seven specimens, 33-37 mm. Rockstone sand-bank. (C. M. Cat. 

 No. 1168a-6; I. U. Cat. No. 11693.) 



Cotypes, four specimens, 22-27 mm. Cluck Island. (C. M. Cat. No. 1170a; 

 I. U. Cat. No. 11694.) 



Cotype, one specimen, 22 mm. Amatuk. (C-. M. Cat. No. 1187rt.) 



Cotypes, two specimens, 32-33 mm. Rupununi Pan. (C. M. Cat. No. 1188a; 

 I. U. Cat. No. 11695.) 



