eigenmann: the FRESHWATER FISHES OF BRITISH GUIANA 291 



148. Characidium fasciatum Reinhardt. (Plate XXXIX, figs. 1, 2.) 

 Characidium fasciatum Reinhardt, Overs. Dan. Vidensk. Sclsk. Forh., 1866,56, 

 pi. 2, figs. 1, 2 (Rio das Velhas). — Lutken, Dan. Vidensk. -Helsk. Skr., (5), 

 XII, 1875, 194, figs. 1.2; and p. xi (Rio das Velhas). — Steindachner, "Siiss- 

 wasserfische Siidostlichen Brasilien," iii, 1876, 1 (Rio Parahyba; Rio Pia- 

 banha near Petropolis); "Flussfische Si'idamerika's," i, 1879, 7 (Orinoco 

 near Ciudad Bolivar); " Ichthyologische Beitrage," ix, 1882, 19 (Canelos, 

 Ecuador). — Boulenger, Proc. Zool. Soc. London, 1887, 280 (Sarayacu).— 

 Eigenmann and Eigenmann, Proc. U. S. Nat. Mus., XIV, 1891, 50. — Eigen- 

 mann and Norris, Rev. Mus. Paulista, IV, 1900, 357 (Rio Tiete; Barba- 

 tana). — Eigenmann, Repts. Princeton Univ. Exp. Patagonia, III, 1910, 427. 

 Characidium zebra Eigenmann, Ann. Carnegie Mus., VI, 1909, 38; Repts. Prince- 

 ton Univ. Exp. Patagonia, III, 1910, 428. 



Seven specimens,. 47-55 mm. Maripicru. (C. M. Cat. Nos. 1151 and 1152a-b; 

 I. U. Cat. No. 11680.) (Types of C. zebra.) 



Fourteen specimens, 32-44 mm. Maripicru? (C. M. Cat. No. 1159; I. U. 

 Cat. No. 11687.) (Types of C. zebra.) 



Head 4.25-4.5; depth 5-5.3; D. 11; A. 7 or 8; scales 4-35 or 36-3^; nine 

 scales before the dorsal. Eye equal to snout, 3.75^1 in the head; bony inter- 

 orbital 1.3-1.5 in the eye. Teeth three-pointed, the middle point longest. 



Pectorals with the tips of the outer rays thickened, reaching ventrals; ventrals 

 not to anal; highest anal raj' a little less than the length of the caudal peduncle, 

 reaching a little beyond tip of of the last ray, but not to caudal fulcra; base of 

 dorsal fin reaching over half-way to the adipose, 6 in the length, the third ray 

 extending about half-way to tip of last. 



Straw-color; a narrow black band from tip of snout to base of middle caudal 

 rays, where it ends near a small black spot; about ten brown cross-bands, the fifth 

 encircling the entire body at tips of ventrals in the type; these bands sometimes 

 becoming double along the sides, giving the appearance of many narrow bands. 

 Back dusky, the centers of the scales light. Opercle and lower lip dark. Ventral 

 surface colorless. Dorsal with a spot behind and near the base of each ray, begin- 

 ning with the fourth; chromatophores along the branched part of the rays; other 

 fins hyaline, without distinct markings. 



149. Characidium pellucidum Eigenmann. (Plate XXXIX, figs. 3-5.) 



Characidium 'pellucidum Eigenmann, Ann. Carnegie Mus., VII, 1910, 39; Repts. 

 Princeton Univ. Exp. Patagonia, III, 1910, 428. 



