Eigenmann: New Characins in Carnegii Museum. 165 



Head 4 4.33; depth 2.66; D. 11; A. 26 28; scales 8 org (.5 or |.6 

 7 to ventrals; eye 3, interorbital 2.5, snoul 3.5 in the head in the 

 i\ pe, 2.5, 3.2, 3.5 respectively in the young. I tarsal and \ entral out- 

 lines nearly equally curved, without distinct humps or depressions; 

 ventral region rounded, the postventral area narrowly so. No reg 

 ular series of median scales in front of the ventrals. Predorsal area 

 narrowly rounded, with a regular median series of about twelve scales. 

 Occipital process aboul five times in the distance from its base to 



Fig. 1. Snout and lower jaw (mouth open) of Probolodits heterostomus I 

 unarm, from above. 



the dorsal, bordered by four or five scales on each side; interorbital 

 rounded, the frontal fontanel little more than half as long as the 

 parietal without the occipital groove. Snout sharp, the lower jaw 

 entering the profile when the mouth is closed; a distinct angle between 

 maxillary and premaxillary ; maxillary not quite equal to length of 

 eye; second suborbital leaving a naked border around its entire lower 

 edge. Gill-rakers 6 + 12. Scales everywhere regularly imbricate ex- 

 cept over the anal musculature; caudal naked, a weak anal sheath 

 of one series of scales along the base of the anterior rays; each scale 

 of the side, with several, maximum about eight, radial stripe; axillary 

 scab' of the ventrals well developed. Dorsal small, about 4 in the 

 length; adipose well developed; caudal forked, the lobes 3.5-4 in the 

 length; anal slightly emarginate, the highest ray reaching tip of thir- 

 h ray. Ventrals not quite reaching anal, pectorals to or a little 

 rid origin of ventrals. A large vertical humeral spot, chiefly 

 above the 3d to the 5th scale of the lateral line; a silvery lateral bajid. 

 A spot on caudal peduncle, in the younger ones definitely continued to 

 the end of the middle ra\ s. 



Psalidodon 3 gen. nov. 

 (Type, Psalidodon gymnodontus sp. nov.) 

 No lips, the teeth exposed; dentary with six incisors, followed by- 

 four to six much smaller teeth in an incurving series. Premaxillary 



3 ^a\ido56v from \{/a\L5ioi>, dim. of ipa\U = a pair of shears, and 65ovs. 



