416 Annals of the Carnegie Museum. 



34. Pimelodus fur (Rcinhardt). 

 69890, C. M., one, 213 mm., Penedo, March 20, 1908. Haseman. 



Iheringichthys Eigenmann. 



Three species of this genus were examined, I. megalops Eigenmann, 

 /. lahrosus (Liitken), and I. zvestermanni (Liitken). The first species 

 (megalops) was taken at Caceres and Corumba, the second {lahrosus) 

 at Uruguayana, and the third (westermanni) at Penedo and Joazeiro. 



I. megalops has a narrow band of premaxillary teeth as described by 

 Eigenmann. The teeth in lahrosus are in a still narrower band and the 

 premaxillary teeth in westermanni consist of a single series of very 

 small teeth, which were entirely overlooked by Liitken. 



Bergiaria and Bergiella become synonyms ot Iheringichthys. 



Key to the Species of Iheringichthys. 



a. Premaxillarj' with a single series of teeth; snout long, subconical; eye five times 



in the head, less than the interorbital i. westermanni (Liitken) . 



b. Interorbital concave; width of occipital process at its base equal to its 

 length; eye three and one-half times in the head; upper lip scarcely nar- 

 rowed in the middle 2. megalops Eigenmann. 



bb. Interorbital flat; occipital process distinctly narrower than long; eye four 

 and one-quarter times in the head; upper lip with deep notch in the middle. 



3. lahrosus (Kroyer). 



35. Iheringichthys megalops Eigenmann & Ward. 



y2^ia-h, C. M., two, 172-185 mm., Caceres, May 22, 1909. Haseman. 

 7242C-&, C. M., two, 129-131 mm., Corumba, May 9, 1909. Hase- 

 man. 



36, Iheringichthys westermanni (Liitken). 



72490-^, C. M., five, 89-154 mm., Penedo, March 20, 1908. Haseman. 

 72500-/?, C. M., eight, 46-176 mm., Joazeiro, Nov. 27, 1908. Hase- 

 man. 



37. Iheringichthys labrosus (Kroyer). 



72480-7, C. M., ten, 102-179 nim., Uruguayana, Feb. 6, 1909. Hase- 

 man. 



38. Goeldiella eques (Miiller & Troschel). 



704ia-&, C. M., two, about 205-300 mm., Manaos, Nov. 27, 1909. 

 Haseman. 



