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INDIANA UNIVEESITY STUDIES 



Raspadura and in the Cauca valley between Piedra Moler and Cali. Those 

 from the Cauca valley represent new species. 



Head 3.75-4 ; depth 3.3-3.5 ; D. 11 : A. 8 or 9 ; lateral line 32 or 33 ; eye 

 .66-1 in snout, 3.5-4.5 in the head. 1-1.3 in interorbital. Seven scales be- 

 tween dorsal and ventral. 



Outer pectoral rays thickened ; pectoral not reaching ventrals, ventrals 

 to the anal in males. Males with a dark lateral band from snout to middle 

 of caudal, back dark with fainter streaks ; female lighter, its dark median 

 band crossed by numerous bands which in the region of the anal extend 

 entirely across the body. 



Type, 51 mm., Cali. CM. No. 4847. 



Paratypes, thirty-two, Cali, CM. No. 4848 a-j ; I.U.M. No. 12701 a-j. 

 Paratypes, two, largest 63 mm., Piedra Moler, CM. No. 4849; I.U.M. 

 No. 12702. 



Paratypes, two, largest 58 mm.. Cartago, CM. No. 4850; I.U.M. No. 

 12703. 



30. Characidium phoxocephalum sp. nov. 



Head 4 ; depth 4-4.3 ; D. 11 or 12 ; A. 8 ; lateral line 36 ; seven scales 

 between dorsal and ventral. Eye equals snout, 4 in head, 1 in interorbital. 



Snout pointed, mouth subterminal, maxillary reaching to below an- 

 terior edge of eye ; outer rays of pectoral thickened, the eighth ray longest, 

 reaching to within one scale of the ventrals; ventrals not quite to anal. 



A dark band from snout to middle caudal rays, crossed by about ten 

 bars ; dark line along the upper parts of the scales of the back ; base of 

 dorsal hyaline, next a dark band, then a series of hyaline spots, tips dusky ; 

 anal similar to dorsal ; margins of thickened pectoral rays dark. 



Similar to caucamim, more slender, snout more pointed, scales in lat- 

 eral series more numerous. 



Type, 68 mm., a female. Paila, CM. No. 4851. 



Paratype, 63 mm., Paila, I.U.M. No. 12704. 



31. Gambusia nigroventralis Eigenm.ann and Henn sp. nov. 



Head 4.5-4.8 ; depth at origin or dorsal 4.5-5 ; depth of caudal peduncle 

 about 6 in length to base of caudal and about 1.3 in head. Eye 2.2-2.5 

 in head; equal to interorbital width. Snout short and blunt, lower jaw 

 not extending beyond upper; snout 1.5 in eye. Body depressed, profile 

 arched. 



D. 9; A. 9; P. 7; Y. 6; scales 29-30 in lateral series; 8 in transverse 

 series. 



Origin of dorsal slightly in advance of the middle of the entire length, 

 slightly posterior to anal origin. Ventral rays graduated, outer ones 

 longest, barely reaching the vent. In males, the anal is a pointed sword- 

 shaped organ, arising at the anterior third of the entire length. Its length 

 is about 2.45 in the entire length of the fish. 



The males of this species, in life are evidently highly colored. A bright 

 band of pigment extends from the occiput to the dorsal. The tip of the 

 caudal in both sexes is broadly banded with black. Basal portion of dor- 

 sal rays intensely pigmented, lighter outward. Body pigment, reticulated. 



