eigenmann: the FRESHWATER FISHES OF BRITISH GUIANA 467 



U. S. Nat. Mus. No. 47, 1898, 1403 (Cachiura).— Jordan and Evermann, 



Rept. U. S. Fish Com. for 1895, 1896, 394 (name only ) .— Evermann and 



Marsh, Bull. U. S. Fish. Com. XX, 1902, 215 (name only) .— Hargreaves, 



Fishes of Brit. Guiana, Appendix, 1904, 1. 

 Cestreus acoupa Jordan and Eigenmann, Rept. U. S. Fish Com. for 1886, 1889, 



363 (Cachiura, Brazil). 



Seventeen specimens, 75-290 mm. Georgetown market. (C. M. Cat. No. 

 24Sla-g; I. U. Cat. No. 12574.) 



Head 3.4-3.8; depth 3.8-4; D. X-I, 19-21; A. I or 11,8 or 9; scales 55-65 

 with pores, sixty transverse series above the lateral line; eye 5-5.8 in the head; 

 interorbitals somewhat convex, 4.7 in the head. 



Compressed and elongate. Mouth moderate, not very oblique; maxillary very 

 broad, reaching to a vertical from a little beyond the eye, 2.3 in the head. Lower 

 jaw a little protruding. Gill-rakers 4 + 10, the longest 1.5 in the eye. The head 

 covered with cycloid scales; scales of body and vertical fins all ctenoid. Dorsals 

 rather tall; longest dorsal spine 2.1 in the head. Pectorals not reaching the end of 

 ventrals. Color light below, above darker and with very faint longitudinal stripes 

 along the rows of scales; axil pale; spinous dorsal, tips' of soft dorsal rays, most of 

 the caudal, and a spot on the lining of the preopercle, dusky. 



314. Cynoscion virescens (Cuvier and Valenciennes). 



Otolithus virescens Cuvier and Valenciennes, Hist. Nat. Poiss., V, 1830, 72 

 (Surinam). 



Cynoscion virescens Jordan, Proc. U. S. Nat. Mus., IX, 1886, 588 (name only).— 

 Jordan and Evermann, Rept. U. S. Fish Com. for 1895, 1896, 395 (name 

 only); Bull. U. S. Nat. Mus. No. 47, II, 1898, 1415 (Victoria, Brazil) .—Ever- 

 mann and Marsh, Bull. U. S. Fish Com., XX, 1902, 215 (name only). 



Cestreus virescens Jordan and Eigenmann, Rept. U. S. Fish Com. for 1886, 1889, 

 371 (Victoria, Brazil). 



Otolithus microps Steindachner, Denkschr. Akad. Wiss. Wien, XLI, 1879, 57, pi. 

 8, fig. 2 (Porto Alegre, Brazil). 

 Five specimens, 80-105 mm. Georgetown market. (C. M. Cat. No. 2483a-c; 



I. U. Cat. No. 12576.) 



Head 3-3.8; depth 4-5.2. D. XI,28; A. 1,8. Scales 80 with pores, 125-130, 



vertical series. Eye 7-8.5 in the head; interorbital very flat, 4-4.5 in the head. 

 A thickish, spindle-shaped fish, with the body slightly compressed and the 



head depressed in front; snout rather pointed, 4 in the head. Mouth oblique to 



