eigenmann: the FRESHWATER FISHES OF BRITISH GUIANA 479 



Fis.-Nat. Cuba, II, 1868, 325 (Cuba). — Gunther, Trans. Zool. Soc. London, 

 VI, 1868, 387 (Atlantic coast of Central America). — Poey, "Enumeratio 

 Piscium Cubcnsium," in An. Soc. Esp., IV, 1875, 121 (Cuba). — Gunther, 

 Ann. and Mag. Nat. Hist., (5), VI, 1880, 9 (Rio Plata).— Poey, "Fauna 

 Puerto Riquena," in An. Soc. Esp., X, 1881, 325 (Porto Rico). — Perugia, 

 Ann. Mus. Genova, (2), X, 1891, 313. 



One specimen, 335 mm. Georgetown market. (C. M. Cat. No. 2480a.) 

 Twelve specimens, 49-106 mm. Georgetown market. (C. M. Cat. No. 

 2471a-d; I. U. Cat. No. 12568a-d.) 



Head 3.2; depth 3.3; D. X-I,26 to 30; A. 11,7 or 8; scales 54 with pores; 

 eye 6 in the head in the adult, about 4.5 in the young; interorbital 4 in the head. 

 Compressed; dorsal profile convex, ventral profile nearly straight; snout some- 

 what bluntish, 3.1 in the head. Posterior nares on the same horizontal as the lower 

 edge of the iris. Teeth in broad villiform bands, the outer row of the upper jaw 

 only very little enlarged, even in the large specimen. Gill-rakers about 8 + 12. 

 Scales of the breast, and at least the sides of the head, cycloid, those of the side 

 and back and top of the head in the young ctenoid. Fins naked, except the base of 

 the caudal. Dorsal high, longest spine 2 in the head; second anal spine moderate, 

 4.3-5 in the head in the adult, 2.8 in the young. Caudal double truncate in the 

 adult, elongate in the young. Pectorals long, reaching beyond the ventrals, 1.3 in 

 the head; ventrals filamentous, 1.5 in the head. 



Color silvery all over, the dark spots above the lateral line forming con- 

 tinuous streaks along the rows of scales which are nearly as wide as the interspaces; 

 the short vertical bars crossing the lateral line are clear but very faint in the 

 large specimens and faint but not so clear in the young. The axil and a small patch 

 on the lining of the opercle are pale dusky. Small specimens have the distal half 

 of the dorsals and caudal somewhat dusky, as well as a small dark spot at the base 

 of each dorsal ray and spine. 



Lonchurus Bloch. 

 Lonchurus Bloch, Ichthyologia, 1793, pi. 360 (barbatus = lanceolatus) . 

 Lonchiurus Jordan and Evermann, Bull. U. S. Nat. Mus. No. 47, II, 1895, 



1481. 



A genus of but one species, without close relatives. 



324. Lonchurus lanceolatus Bloch. 

 Lonchurus lanceolata Bloch, Nov. Act. Sci. Copenhagen, III, 1788, 383 (India). 

 Lonchurus lanceolatus Gunther, Catalogue, II, 1860, 317 (copied). — Jordan and 

 Eigenmann, Rept. U. S. Fish Com. for 1886, 1889, 434 (copied). 



