Indiana University Studies 



No. 19 BLOOMINGTON, INDIANA January 16, 1914 



[Contributions from the Zoological Laboratory of Indiana University. No. 133.] 



New Fishes from Western Colombia, 

 Ecuador, and Peru 



By Carl H Eigenmann^ Arthur Henn, and Charles Wil'-on 



The following species of new fishes were collected for the most 

 part by Mr. Charles Wilson and Mr. Arthur Henn ; one was pur- 

 chased from Rosenberg and the remainder were collected by or 

 under the direction of Mr. Manuel Gonzales. 



Mr. Wilson collected during January, February, and March of 

 1913 in the lower Patia and its tributary, the Telembi, in the upper 

 San Juan basin, and in the Atrato basin. His expenses Avere pro- 

 vided for by Mr. Carl G. Fisher and Mr. Hugh McK. Landon of 

 Indianapolis. Mr. Henn collected during the entire year of 1913 

 in the upper and lower Patia basin, in the lower San Juan basin, 

 and in Western Ecuador. His entire expenses were provided by 

 Mr. Landon. 



Full accounts of these two expeditions will appear in the gen- 

 eral account of the fishes of the regions covered. 



LANDONIA^ Eigenirann and Iicnn, gen. nov. 



A genus of Tetragonopterin.'ie cliaracteiizecl by its teeth. Allied to 

 Astynnax. Maxillary with two very broad straight edged teeth, their 

 cutting edge continuous and more than half the length of the maxillary : 

 ])remaxiriary teeth in two rows very closely pressed together, three teeth 

 in the outer row, alternating with the four of the inner row, all these teeth 

 iiicisor like, finely notched ; the entire series of premaxillary teeth abont as 

 wide as the first of the maxillary teeth, mandible with five or six teeth on 

 each side, the posterior three similar bnt narrower than those of the 

 maxillary, the anterior two narrower and finely denticulated, the entting 

 edges of the teeth continuous ; second suborbital long, leaving a narrow 

 naked margin; lateral line complete, caudal naked; gill rakers IT+S, 

 slender; half os long as eye, those of the upper arch similar to those of 

 the lower. 



'For Mr. Hugh McK. Lialoi, who h.i^ made the stud'e- p:)S3i -.le. 



