Jordan and Evcrmann. — Fishes of North America. 1537 



portions of vetical fins with series of blackish dots; axil of pectoral 

 orange-colored. Length 8 inches. Rio Motagua, Nicaragua. (Giinther.) 

 {(.iixpoi, small; 6(pQaAju6i;, eye.) 



Herog microiMhalvius, Gunther, Cat. Fislies, iv, 295, 1862, Rio Motagua, Nicaragua. 

 (Coll. Godman & Salvin) ; GUnthee, Fish. Ceutr. Am., 464, 1869. 



1942. HEROS UROPHTHALMUS, Giinther. 



Head nearly 3; depth 2i to 2A. D. XVII, 11; A. VI, 9; scales .5-28-12. 

 Head as high as long; snout rather elevated, with cleft of mouth oliliiiue 

 and with lower jaw prominent; preorbital as wide as orbit; interorbital 

 space flat, wider than orbit; eye nearer to extremity of snout than to that 

 of operculum; dorsal spines of moderate length and strength, length of 

 twelfth f that of head ; free portion of tail higher than long ; anal .spines 

 strong and long; distance between vent and root of ventral f length of 

 head. Fold of lower lip continuous in middle. Scales on cheek in 6 

 series. Brownish or greenish olive, with 7 blackish cross bands as broad 

 as interspaces between, the first descending obliquely backward across 

 nape; the second, third, and fourth below the dorsal spines; the seventh 

 across free portion of tail; a large, black, white-edged ocellus on root of 

 caudal; fins blackish; pectoral yellowish toward base. Length 7 inches. 

 Lake Peteu, Guatemala. (Giinther.) {ovpd, tail; d(pOaAjii6s, eye.) 



Seros urophthalmus, Gunther, Cat. Fishes, iv, 291, 1862, Lake Peten (Coll. Godman & 

 Salvin) ; Guntheb, Fish. Centr. Am., 454, pi. 72, fig. 1, 1869. 



1943. HEROS TROSOHELl, Steindachner. 



Head2f; depth 21. D. XVI, 10 or 11; A. VI, 8; scales 5-32 to 34-13; 

 eye ij^ in head, 1| in snout ; cheeks with 5 or 6 rows of scales. Body short 

 and deep, the back elevated but not much arched: mouth small, not 

 longer than eye, little curved ; the outer teeth strong ; pectoral rounded, 

 shorter than head, not reaching first anal spine; caudal rounded; ventrals 

 short, spines moderate; soft dorsal and anal scaly at base, pointed at tip. 

 Brownish, with 7 dusky cross bauds curved i'orward; a large round dif- 

 fuse blackish blotch at base of caudal, mostly above end of lateral line; a 

 deep black longitudinal spot, part of the first dark cross band, behind 

 base of pectoral ; fins dusky bluish, unspotted. Length 7 inches. Mexico. 

 (Steindachner). (Named for Professor Troschel.) 

 Her»s troscheli, Steindachner, Ichthyologische Notizen, iv, 12, 1867, Mexico. 



1944. HEROS CYAXOfiDTTATUS (Baird & Girard). 



Head 3i; depth 2^; eye 4 ; snout 3. D. XVII, 10; A. VI, 8; lateral line 

 25. Body oval, moderately compressed; profile gently curved; interorbital 

 region slightly depressed; eyes small, situated rather backward and high 

 up ; mouth small, maxillary not reaching orbit ; 6 rows of scales on cheek ; 

 fins high; longest dorsal spine equal to distance from snout to pupil; soft 

 rays longer, 1| in head; longest aual rays 1^ in head, equal to length of 

 pectoral. Brownish, body and soft parts of vertical fins everywhere with 



