Jordan and Evermann. Fishes of North America. 1535 



that of head ; pectoral short, less than f length of head, and scarcely 

 reaching to vent; ventral short, pointed, the outer ray produced; dis- 

 tance between vent and root of ventral more than \ length of head; 

 fold of lower lip continuous in middle; scales on cheek small, in 8 series. 

 Brownish, a Mack interrupted band running from eye to a spot on root of 

 caudal, this spot above lateral line; an oblique short black streak running 

 from lower posterior angle of orbit toward a spot on suture between oper- 

 culum and suboperculurn, close to interoperculum, the band not continu- 

 ous with the spot ; back with traces of irregular cross bands, more distinct 

 in young than in old individuals; vertical fins with numerous brown 

 dots. Length 10 inches. Rio Mo tagua and Lake Nicaragua. (Giinther.) 



Heron motaguenxig, GUNTHER, Fish. Centr. Am., 462, pi. 77, fig. 2 , 1869, Rio Motagua, Nic- 

 aragua. (Coll. (< <><huan.) 



1938. IIKROS OBLONGUS, Giintlier. 



Head 3; depth 3. D. XVIII, 12 or 13; A. VI, 8 or 9; scales 5^-33-15. 

 Head a little longer than high; snout of moderate extent; preorbital 

 wider than eye, the diameter of which is length of head; cleft of mouth 

 rather narrow, horizontal, with jaws equal anteriorly; maxillary not 

 extending backward to vertical from front margin of eye; teeth in a band, 

 those of outer series much larger and stronger than others, and with brown 

 tips; interorbital space convex, not quite twice as broad as orbit; eye 

 about equidistant from end of snout and that of opercle; vertical fins 

 scaly at base; spinous dorsal rather low, length of twelfth dorsal spine 

 less than that of head ; soft dorsal and anal somewhat produced, the 

 former reaching to middle of caudal ; free portion of tail rather longer 

 than high; caudal subtruncated, its length a little less than total; pec- 

 toral shorter than head, about equal in length to ventral, the outer ray of 

 which reaches to vent; fold of lower lip continuous in middle; 5 series 

 of scales on cheek. Brownish, with about 5 very indistinct broad darker 

 cross bands, descending from back to a not less indistinct longitudinal 

 band running from above pectoral to a black spot in middle of root of 

 ventral; vertical fins with transverse series of round whitish spots, sepa- 

 rated by a network of dark lines; pectorals yellowish. Length 8 inches. 

 Rio Motagua, Nicaragua. (Giinther.) (oblongus, oblong.) 



Ileros oblongus, GUNTHER, Fish. Centr. Am., 464, 1869. Rio Motagua, Nicaragua. (Coll. 

 Godman.) 



1939. HEBOS DOVII, Giinther. 



Head 2|; depth 3. D. XVIII, 11 or 12; A. VI, 9 or 10; scales 5^-35-13. 

 Head much longer than high ; snout rather elongate, much longer than 

 eye, pointed; cleft of mouth oblique, lower jaw very prominent; maxil- 

 lary reaching vertical from anterior margin of orbit; width of orbit 4 

 times in length of head and equal to that of interorbital space. Eye im- 

 mediately below upper profile, but considerably nearer to end of snout 

 than to that of operculum ; opercles scaly, the scales on operculum larger 

 than those on cheek; suboperculum with 2 series of scales; preorbital 



