eigenmann: the cheirodontinjE. 29 



Proc. Am. Philos. Soc, Vol. XVII, 1878, p. 689 (Peruvian Amazon) ; Eigen- 

 mann & Eigenmann, Proc. U. S. Nat. Mus., Vol. XIV, 1891, p. 55; Ulrey, 

 Ann. N. Y. Acad. Sci., Vol. VIII, 1885, p. 292; ? Boulenger, Ann. & Mag. 

 Nat. Hist. (7) Vol. II, p. 478 (Jurua)i^; Fowler, Proc. Acad. Nat. Sci. Phila., 

 1906, 333, fig. 22 (Ambyiacu, Peruvian Amazon.) 

 Range: Marailon basin; Madeira basin. 

 6917a, C. M. 50 mm. Palo Grande Fall, Rio Mamore, Sept. 30, 1909. Hase- 



man. 

 6918a-b, C. M. two, larger 58, Berlin, Bolivia, Sept. 15, 1909. Haseman. 

 6919a, C. M. one, 43 mm. Maciel, Rio Guapore, July 2, 1909. Haseman. 

 Head 4.33-4.8; depth 4-4.3; D. 11 or 12; A. 18 or 19; eye 3-3.5 in the head, 



1 in snout; interorbital 2.6-3 in the length of the head. 



Maxillary-premaxillary border three times in the head, maxillary about four 



times; maxillary with five to eight teeth on one-third to one-fourth of the margin; 



premaxillary with seven teeth; mandible with ten to sixteen. Middle caudal rays 



dark. 



This species differs from alburnus in the number of maxillary teeth. 



8. Aphyocharax anisitsi Eigenmann & Kennedy. (Plate III, fig. 6.) 

 Aphyocharax anisitsi Eigenmann & Kennedy, Proc. Acad. Nat. Sci. Phila., 1903, 

 p. 517 (Asuncion; Campo Grande; Arroyos Trementina and Chagalalina) ; 

 Eigenmann, Reports Princeton Univ. Exp. Patagonia, Vol. Ill, 1910, p. 429. 

 Range: Paraguay basin; Cacequy, Uruguay basin. 



10024, 10026, I. U. M.; 936a-b, C. M., fifteen specimens, Campo Grande. 

 Anisits. 



6920a-k, C. M., twelve (four males), largest 35 mm., Asuncion, March 28, 1909. 



Haseman. 

 10028, I. U. M., type, 41 mm.; 10027 & 10029, I. U. M., three, Asuncion. 

 Anisits. 



6921a, C. M., one, 37 mm. Puerto Suarez, Bolivia. Steinbach. 

 10031, I. U. M., one, Arroyo Trementina. Anisits. 



10025, I. U. M., one, Arroyo Chagalalina. Anisits. 



6222a-c, C. M., three, largest 32 mm. to base of caudal. Cacequy. R. Ibicuhy, 



into Uruguay. Haseman. 

 Head 3.75-4.2; depth 3-3.75; D. 10 or 11; A. ^i-, ^, ¥, ¥, ¥; scales 30-35, 



13 1 have specimens of alburnus from the Jurua sent by the British Museum. It is possible that these 

 are some of the specimens identified as pusillus by Boulenger. 



