Jordan and Evermann. 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. (Gunther.) 

 $, small; 6<pOaA//o, eye.) 



JTeros microphthalmus, GUNTHER, Cat. Fishes, iv, 295, 1862, Rio Motagua, Nicaragua. 

 (Coll. Godman & Salvin) ; GUNTHER, Fish. Centr. Am., 464, 1869. 



1942. IIKKOS UROPHTHALMUS, Giintlier. 



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

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

 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 | that of head; free portion of tail higher than long; anal spines 

 strong and long; distance between vent and root of ventral 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; iins blackish; pectoral yellowish toward base. Length 7 inches. 

 Lake Peten, Guatemala. (Giinther.) (ovpd, tail; 6(pOahju.6$, eye.) 



Iffros urojththalmits, (irxTHER, Cat. Fishes, iv, 291, 1862, Lake Peten (Coll. Godman & 

 Salvin) ; G0NTHER, Fish. Centr. Am., 454, pi. 72, fig. 1, 1869. 



1943. HfiROK TROSCHEL1, Steindachner. 



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

 eye 4 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 bands curved forward ; 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 Troschcl.) 



Herts troscheli, STEINDACHNER, Ichthyologische Notizen, iv, 12, 1867, Mexico. 



1944. II Kit OS CYANOGUTTATUS (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, If in head ; longest anal rays 1 in head, equal to length of 

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



