EIGENMANN: the freshwater fishes of BRITISH GUIANA 323 



Head 3.8: depth 1.75; D. 11; A. 34; scales 7.5-35-7; eye .4 in snout, 2.5 

 in head, 1 in interorbital. 



Deep and much compressed. For the description read that of Fowlerina 

 orbicularis. 



Dorsal not reaching to adipose; anal but little emarginatc, the highest ray 

 reaching the seventeenth ray. 



177. Moenkhausia grandisquamis (Mi'iller and Troschel). (Plate XLVII, fig. 2.) 

 Tetragonopterus grandisquamis Muller and Troschel, Hora? Ichth., I, 1845, 27, 



pi. 8, fig. 2 (Surinam). — GIjnther, Catalogue V, 1864, 328 (British Guiana). 



— Ulrey, Ann. N. Y. Acad. Sci., VIII, 1895, 281. 

 Moenkhausia grandisquamis Eigenmann, Repts Princeton Univ. Exp. Patagonia, 



III, 1910, 437. 



Fifty-one specimens, 45-79 mm. Bartica. (C. M. Cat. No. 1348«-j; I. U. 

 Cat. No. 11857.) 



Sixty-six specimens, 51-86 mm. Rockstone. (C. M. Cat. No. 1349a-^'; I. U. 

 Cat. No. 11858.) 



Thirty-five specimens, 50-115 mm. Crab Falls. (C. M. Cat. No. 1350a-j; 

 I. U. Cat. No. 11859.) 



Eight specimens, 64-110 mm. Tumatumari. (C. M. Cat. No. 1351«-f; I. U- 

 Cat. No. 11860.) 



One specimen, 122 mm. Kangaruma. (C. M. Cat. No. 1352a.) 



One specimen, 55 mm. Wismar. (C. M. Cat. No. 1353a. j 



This species is also abundant in the Amazon basin. 



Head 3.5-4; depth usually 2 in the adult; D. 10 or 11; A. usually 26-28; 

 scales 5-35-4; eye 2.33-2.5 in head; interorbital equal to eye, or but a trifle larger. 



A round humeral spot over the thirtl to fifth scales of the lateral line, dis- 

 appearing with age; no caudal spot in adult; sometimes a dusky area at end of 

 caudal peduncle in young; a distinct silvery lateral band, the width of the free 

 margin of a row of scales; fins all i:)lain, mostly hyaline; sides silvery, highly 

 iridescent. 



178. McEnkhausia chrysargyrea CUuither. 

 Tetragonopterus chrysargyreus Gunther, Catalogue, V, 1864, 328 (Essequibo). — 



Eigenmann and Eigenmann, Proc. U. S. Nat. Mus., XIV, 1891, 53. — Ulrey, 



Ann. N. Y. Acad. Sci., VIII, 1895, 281. 

 Moenkhausia chrysargyrea Eigenmann, Repts. Princeton Univ. Exp. Patagonia, 



III, 1910, 437 (Tabatinga; Tefi"e; Jutahy; Jose Fernandez). 



