FRESH-WATER FISHES OF WESTERN CUBA. 
235 
Dark; a black lateral and a black caudal spot; side with 7 light crossbars; a light streak across 
nape from upper angle of gill-opening, another across from behind eye, another between eyes; snout 
light; sjraces between light bars form dark bars of about equal width except lirst two on body, which 
are much wider at the top; a black streak from eye across upper angle of gill-opening to the second 
dark bar; cheeks and opercles with black spots and streaks, ventral surface spotted; vertical fins and 
ventrals dark; soft dorsal and anal with obscure spots; pectoral pale, unspotted. The dark band in 
which the lateral spot is located continued to the back. 
Young much lighter colored, a few dark spots along opercle and below cheek; ventral surface 
unspotted, lateral and caudal spots conspicuous. 
A fifth specimen, 152 mm. long, from Paso Real, is a typical Mrar.anthus. 
Heros nigricans Eigenmann, new species. 
Type, No. 9668, Ind. Univ. Mus., a specimen 192 mm. long, from Pinar del Rio. 
One specimen was secured. It is the most prominent of the aberrant forms, and I should unhesi- 
tatingly describe it as a distinct species if I had obtained more than one specimen. 
D. xiv, 11; A. iv, 10; scales 28; pores about 15 H O ; head 2.6; depth a trifle less than 2 in the 
length; depth at end of opercle 2 in length +£ diameter of eye; depth over middle of eye equals 
length of head, less one ocular diameter; snout pointed, upper and lower profiles nearly equally 
inclined to behind eye; upper profile gibbous behind eye; maxillary very little exposed when mouth 
Fig. 17. Heros nujricans Eigenmann, new species. 
is clos'd; eye 1.5 in interorbital. Gill-cavity, with a small supplementary pocket at its upper angle- 
entered by a large foramen; lateral line irregularly developed on left side; no pores on either side o. 
tail; soft dorsal falcate, fifth ray as long as caudal, 3 times as long as last ray, its tip reaching nearly to 
middle of caudal, 3.6 in length, longer than head, less opercle; caudal broadly rounded; anal falcate 
fourth ray longest, equaling head, less opercle; ventrals reaching to vent. 
Color everywhere nearly black, with 7 lighter crossbars, 2 of which are on caudal peduncle; an 
additional light streak from angle of gill-opening across nape; cheeks and opercles with lighter mark- 
ing; fins nearly uniform black. 
