280 THE AMERICAN CHARACIDAE. 



Origin of dorsal nearer snout than to caudal, 3.4 in the length. Anal 

 emarginate, its origin about equidistant from snout with the 8th dorsal ray. 

 Ventrals reaching anal, their origin a little in advance of that of the dorsal; 

 innominate bones protruding as spines in front. Pectorals reaching beyond 

 origin of ventrals. 



A conspicuous bullet-shaped humeral spot, the blind end forward, a faint 

 dark streak extending down from it ; a diffuse caudal spot occupying the entire 

 width of the end of the caudal peduncle. Dorsal line dark, sides profusely 

 covered with pigment-cells disappearing on the belly ; cheeks and opercles dotted ; 

 fins dotted, upper and lower margin of caudal dark. Straw colored in life, bases 

 of dorsal, anal, and caudal lobes ochreous. 



35. AsTYANAX BREViRHiNUS Eigcnmanu. 



Plate 47, fig. 2. 



Astyanax brerirhinus Eigenmann, Bull. M. C. Z., 1908, 52, p. 96; Rept. Princeton univ. exped. Pata- 

 gonia, 1910, 3, p. 432. 



Habitat. — Rio Jequitinhonha, eastern Brazil. 



One specimen. 20905 Type. About 68 mm. Rio Jequitinhonha. Hartt 

 and Copeland. 



Distinguished by its blunt snout. , 



Head3f; depth 2.4; D. 11; A. 28; scales 6-35-4 ; eye 2.5; interorbital 3. 



Compressed, dorsal and ventral profiles equally arched, the former rising 

 to the first dorsal ray. Preventral area rounded, without a complete median 

 series of scales ; postventral area narrowly compressed. Predorsal area obscurely 

 keeled, with a median series of about 10 scales. 



Occipital process very slender, ^ of the distance from its base to the dorsal, 

 bordered by 2^ scales on the sides. Interorbital convex. Fontanels narrow, 

 of nearly equal width, the frontal fontanel H in the parietal without the occipital 

 groove, frontals not in contact in the middle. Mouth low; snout half as long 

 as the eye, very blunt. Maxillary not quite half as long as snout and eye. 

 Second interorbital leaving about i of the cheeks naked. Five teeth in the 

 front row of the premaxillary, five teeth in the second row. A small tooth on 

 the maxillaries, a second minute one on the right maxillary. Four larger teeth 

 on the dentary and a number of smaller ones on the sides, not sharply separated 

 from the larger ones. 



Gill-rakers 6 + 10. 



