448 memoirs of theJcarnegie museum 



Cotype, 51 mm. Mud-flats, Demerara River. (C. M. Cat. No. 2449a.) 



Head 4.4; depth 5.25; D. 13; A. 18; scales 37-40, seven in a vertical series; 

 eye .5 in the snout, 3 in the head. 



Subfusiform; opercle and preopercle but little oblique; maxillary extending 

 but little behind the eye; both jaws with minute teeth; about twenty rakers in 

 the lower arch, the longest about 1.5 in the eye. 



Origin of dorsal a little nearer to snout than to the caudal, or equidistant from 

 them; ventral nearly an orbital diameter farther forward than the dorsal; origin 

 of anal under the last dorsal ray; pectorals not reaching the ventrals. 



Scales deciduous, with delicate, wide-meshed reticulations on the sides, and 

 much more evident finer-meshed reticulations on the caudal peduncle. 



A narrow lateral band, widest above the posterior part of the anal; a black 

 mid-ventral line from the anus to the caudal; a double row of chromatophores on 

 the back; snout and chin dark; margin of caudal and its outer rays black. No 

 chromatophores on the sides below the lateral band. 



Twelve specimens, 31-33 mm. Morawhanna. (C. M. Cat. No. 2450a-/; 

 I. U. Cat. No. 12563.) 



These specimens may represent this species. They are more compressed; no 

 lateral band, entire side of tail with chromatophores, chin and snout pale; color 

 otherwise much as in the preceding, except that the color of the back scarcely 

 extends forward beyond the dorsal. 



291. Stolephorus surinamensis Bleeker. 



? Engraulis clupeoides Swainson, Class. Fishes, Amph., and Rept., II, 1839, 388 



(Pernambuco). 

 Stolephorus clupeoides Jordan and Evermann, Bull. U. S. Nat. Mus. No. 47, 1S96, 



447. — Eigenmann, Repts. Princeton Univ. Exp. Patagonia, III, 1910, 451. 

 Stolephorus surinamensis Bleeker, Nederl. Tijdschr. Dierk., 1866, 178 (Surinam). 

 Engraulis surinamensis Gunther, Catalogue, VII, 1868, 393 (River Capin). — 



Steindachner, " Ichthyologische Beitrage," viii, 1875, 55. 



Two small specimens, 27-37 mm. Bartica rocks. (C. M. Cat. No. 2447; 

 I. U. Cat. No. 12561.) 



Head 3-3.25; depth 4; D. 16; A. 26; scales about 34; eye 3.5 in the head. 



Compressed; ventral profile more strongly arched than the dorsal; snout 

 pointed, much projecting; minute teeth along both jaws; gill-rakers as long as the 

 eye, about thirty-five on the lower arch (as compared with about one hundred in 

 productus) ; margin of the opercle and preopercle very oblique, the maxillary reaching 

 the angle of the preopercle. 



