EIGENMANN: the FKESHWATER fishes of BRITISH GUIANA 337 



Head 3.75; depth 3.75; D. 11 ; A. 19 to 22; scales 5-30 to 33-3; eye 2.5 in the 

 head; interorbital not quite equal to the eye, about 3 in the head. 



A diffuse, round, or somewhat vertically- elongate, humeral spot. A dark 

 lateral stripe, heaviest behind the origin of the anal, but not reaching the base of 

 the caudal. A black line at the base of the posterior anal rays, not continuous 

 with that at the base of the first seven. Dorsal, caudal, first seven rays of the anal, 

 and first two or three rays of ventrals, dusky. Scales of the back dusky, each often 

 bearing a single black spot. 



195. Hemigrammus cylindricus Durbin. (Plate XLIX, fig. 3.) 

 Hemigrammus cylindricus Durbin, Ann. Carnegie Mus., VI, 1909, 62. — Eigen- 



MANN, Repts. Princeton Univ. Exp. Patagonia, III, 1910, 436. 



Type, 57 mm. Tmnatumari. (Carnegie Museum Catalog of Fishes No. 

 1461.) 



Cotypes, six specimens, 35-58 mm. Tumatumari. (C. M. Cat. No. 1462a; 

 I. U. Cat. No. 11915.) 



Cotypes, eleven specimens, 46-54 mm. Crab Falls. (C. M. Cat. No. 1163a-c; 

 I. U. Cat. No. 11916.) 



Cotypes, twenty specimens. Rockstone. (C. M. Cat. No. 1464a-e; I. U. 

 Cat. No. 11917.) 



Cotype, one specimen, 45 mm. Gluck Island. (C. M. Cat. No. 1465rt.) 



Head 3.3-3.66; depth 3.66-4.66; D. 11; A. 17 to 20; scales 5-30 to 84-3; eye 

 large, slightly longer than wide, 2.75 in the head; interorbital almost flat, almost 

 equal to the eye, 3 in the head. 



Humeral spot small, roundish or roughly triangular, often intense. A black 

 line at the base of the anal. A narrow black lateral stripe. No true caudal spot, 

 but sometimes a dusky spot at the base of each lobe. 



196. Hemigrammus analis Durbin. (Plate XLIX, fig. 6.) 

 Hemigrummii.s analis Durbin, Ann. Carnegie Mus., VI, 1909, 64. — Eigenmann, 



Repts. Princeton Univ. Exp. Patagonia, III, 1910, 436. 



Type, 35 mm. Rockstone. (Carnegie Museum Catalog of Fishes No. 1466.) 



Cotypes, twenty-one specimens, 24-29 mm. Cluck Island. (C. M. Cat. 

 No. 1468a-e; I. U. Cat. No. 11919.) 



Cotypes, seventy-three specimens, 19-36 mm. Rockstone. (C. M. Cat. No. 

 1467a-i; I. U. Cat. No. 11918.) 



Cotypes, two specimens, 29-35 mm. Wismar. (C. M. Cat. No. 14()9r/; I. U. 

 Cat. No. 11920.) 



