Jordan and Evcrmann. — Fishes of North America. 1533 



brown, vertical marginal streak; a lateral spot usually distinct; soft 

 vertical fins with brown spots, each \ as large as a scale. Length 7 inches. 

 Lake Nicaragua. (Giinther.) 



nerosnicaraciuensis, GOnther, Proc. Zool. Soc. Lond. 1864, 153. Lake Nicaragua (Coll. Capt. 

 Dow) ; GUNTHEB, Fish. Centr. Am., 4G5, 1869. 



1934. HEBOS MANAGCENSIS, Giinther. 



Head 2i; depth 21. D. XVIII, 10; A. VII, 8; scales 4, V-32-13. Head 

 longer than high; siioiit of moderate length, somewhiit pointed; lower 

 jaw prominent; cleft of mouth oblique; maxillary reaching beyond an- 

 terior margin of eye. Width of orbit i length of head, and i width of 

 interorbital space ; eye inunediatcly below upper profile, its distance from 

 end of snout a little more than i that from hinder margin of operculum ; 

 opercles scaly, the scales on operculum larger than those on cheek ; sub- 

 operculum with 2 series of scales; preorbital with antero- inferior margin 

 concave, narrow, its greatest width scarcely more than i that of orbit; 

 dentition as in IT. dovii; first dorsal spine inserted behind vertical from 

 upper end of gill opening; dorsal and anal spines of moderate length and 

 strength, length of twelfth dorsal fin 3| times in that of head; vertical 

 fins slightly scaly at base; soft dorsal and anal not reaching to middle of 

 caudal ; caudal rounded ; distance between dorsal and caudal much less 

 than depth of free portion of tail; pectoral short, more than i length of 

 head, and extending only to origin of anal; ventral with outer rays slightly 

 produced, reaching beyond vent; distance between vent and root of ven- 

 tral not quite i length of head. Fold of lower lip continuous in middle; 

 scales on cheek small, rather irregularly arranged, in 8 or 9 series. Green- 

 ish brown, shining golden, and irregularly marbled with dark brown ; a 

 series of quadrangular black spots (probably a band in young examples) 

 running from eye to a black spot on root of caudal, this spot above lateral 

 line; a brown band descending obliquely from lower posterior angle of 

 orbit to lower posterior augle of operculum ; ^'^•rtical fins with black spots, 

 each spot i as large as a scale. Length 7i inches. Lake Managua, Nica- 

 ragua. (Giinther.) 



Heros managuensi.t. Gunther, Fish. Ceutr. Am., 463, pi. 77, fig. 3, 1869, Lake Managua, 

 Nicaragua. (Coll. Capt. Dow.) 



103."). HEROS AUREUS, Giinther. 



Head 3; depth 2h U. XVI, 9 or 10; A. VII, 8; scales 6-33-13. Head as 

 high as long; snout somewhat elevated, with cleft of mouth oblique and 

 with jaws e(iual anteriorly; preorbital as wide as orbit; eye a little nearer 

 to extremity of operculum than to that of snout; dorsal spines rather 

 slender, length of twelfth a little less than i that of head; distance 

 between dorsal and caudal somewhat less than ^ that of head and some- 

 what less than greatest depth of free portion of tail ; caudal slightly em;irgi- 

 nate; distance between vent and root of ventral ^ length of head; fold of 

 lower lip continuous in middle; scales on cheek in 5 series. Yellowish 

 olive, with (3 dark crossbands extending downward to a yellow longitudi- 

 nal baud running from above pectoral to lower half of base of caudal; the 



