VII. DESCRIPTION OF THREE NEW SPECIES OF 

 CHARACID FISHES.i 



By Carl H. Eigenmann and Arthur \V. Henn. 



(Plate XVII.) 



I. Hemiodus parnaguae, sp. nov. (Plate XVII.) 



5701, C. M., type, 57 mm.; 5762 a-b, C. M., 48-62 mm.; 13541, 



I. U. M., 64 mm., paratypes. Lagoa de Paniagua, Jan. 17, 1908. 



Haseman. 



Related to Hemiodus longiceps Kner and H. microhpis Kner. 



Head 3.5-3.6; depth 3.5-4; D. lo-ii; A. 11-12; scales 20-80 to 

 83-12. Eye equal to, or slightly greater than, snout, 3.5 in head, I in 

 interorbital. 



Slender, compressed; dorsal and ventral profiles equally arched; 

 snout pointed; mouth sub-terminal. A single series of about twenty 

 multicuspid teeth in the upper jaw. 



Origin of dorsal equidistant from tip of snout and tip of adipose, the 

 height of its second ray, which is longest, equal to the head plus one- 

 third of the eye. Anal emarginate, its origin twice as distant from a 

 point between the eye and the edge of the opercle, as from the base of the 

 caudal. Adipose elongate, slightly less in length than the eye. Caudal 

 deeply forked, lobes longer than head; pectorals lanceolate, not reach- 

 ing ventrals, the latter barely reaching the vent. 



Lateral line slightly decurved in front, thence horizontal, very 

 slightly below the mid-line of the body. Scales minute, cycloid, in 

 well defined rows, with few striae; lower abdominal rows but slightly 

 increasing in size. A large axillary scale; fins naked. 



A silvery lateral streak; opercle shining silvery; an oval black spot 

 nearly the size of the eye, midway between the end of the dorsal and 

 the origin of the anal. The upper half of the lower caudal lobe is black 

 and the lower half is speckled with scattered chromatophores. Outer 

 half of anal black; other fins colorless. 



A single mutilated specimen from the same locality (5703 C. M.) ap- 

 parently this species, has the following characters: length to broken 



1 Contributions from the ';^Zoological Laboratory of Indiana University, No. 145. 



87 



