EIGENMANN: the freshwater fishes of BRITISH GUIANA 261 



Curimatopsis macrolepis Eigenmann and Eigenmann, Ann. N. Y. Acad. Sci., IV, 

 1889, 414 (Tabatinga; Lake Hyamary; Cudajas); Proc. U. S. Nat. Mus., XIV, 

 1891, 45.— Eigenmann, Repts. Princeton Univ. Exp. Patagonia, III, 1910, 420. 

 Forty-two specimens, the largest 53 mm. ]Maduni Creek. (C. M. Cat. No. 



2086a-y; I. U. Cat. No. 12273.) 



One specimen, 43 mm. Cane Grove Corner. (C. M. Cat. No. 1287a.) 

 Eighty-eight specimens, the largest 57 mm. Lama Stop-Off. (C. M. Cat. 



No. 1288a-o; I. U. Cat. No. 12274.) 



One specimen, 63 mm. Botanic Gardens, Georgetown. (C. M. Cat. No. 



2093.) 



Two specimens, about 37 mm. Konawaruk. (C. M. Cat. No. 2096; I. U. 



Cat. No. 12280.) 



Three specimens, 40 mm. Gluck Island. (C. M. Cat. No. 2099a-6; I. U. 



Cat. No. 12283.) 



Sixteen specimens, the largest 40 mm. Rockstone. (C. M. Cat. No. 2102a-6; 

 I. U. Cat. No. 12285.) 



Three specimens, 41-43 mm. Wismar. (C. M. Cat. No. 2103a-b; I. U. Cat. 

 No. 12287.) 



Similar to Curimatus spilurus, but readily distinguished by the shape of its 

 mouth, or the incomplete lateral line. Occurring as it does in many places with 

 spilurus, it requires a close scrutiny to pick out individuals of this species from 

 among the young of the latter. In the collection from Rockstone, for instance, 

 sixteen specimens of this species were mixed with 323 of spilurus. 



Head 4.2; depth about 3; D. 11; A. 8 or 9; scales 29 or 30, of which 3-5 are 

 with pores; eye .75 in snout, 2.8 in head, and 1.25 in interorbital. 



Compressed, the preventral area rounded, with a median series of scales, the 

 postventral area more narrowly rounded; predorsal area rounded, with a median 

 series of about eight scales; mouth small, the lower jaw entering the profile; maxil- 

 lary nearly vertical, its anterior margin convex; eye large, the cheek narrow, covered 

 by the suborbital ; interopercle at the angle as wide as the cheek. 



Scales with several slightly diverging striae, regularly imbricate, nowhere 

 notably smaller; fins naked. 



Fins small, dorsal considerably nearer snout than to caudal; caudal about 4 in 

 the length; anal small, slightly emarginate, the anterior ray extending beyond the 

 tip of the last; ventrals reaching anus; pectorals not to ventrals. 



A plumbeous or silvery band ending in a well-defined spot on the last scales; 

 upper part of eye sometimes red; anal yellow; upper part of caudal orange at its 

 base, fading out backward. 



