JULY, 1907. FISHES OF GREAT LAKES, NICARAGUA MEEK. 129 



This species resembles the two preceding species. It has, however, 

 a much less gibbous profile, a deeper body, and different coloration. 



Cichlasoma nicaraguense (Giinther). 



Heros nicaraguensis Gunther, Proc. Zool. Soc., Lond., 1864, 153, 

 Lake Nicaragua: Gill & Bransford, Proc. Acad. Nat. Sci., 

 Phila., 1787, 184, Lake Nicaragua. 



Head 2.8 to 3.0; depth 2.4 to 2.5; D. xvm or xix, 10 or n; 

 A. vin or ix, 7 or 8; scales 7-33-12. Body elongate, compressed; 

 profile very steep, in individuals with nuchal hump developed; profile 

 nearly vertical; mouth small, nearly horizontal; snout 2.5 to 2.7; 

 maxillary 3.0 to 3.6; mandible 2.6 to 2.7; preorbital 3.1 to 4.0; 

 postorbital 2.4 to 2.6; interorbital 2.1 to 3.0; diameter of eye 3.0 

 to 3.07; eye to subopercle 2.0 to 2.6; last dorsal spine 2.0 to 2.2; 

 last anal spine 1.9 to 2.1 ; soft dorsal and anal rays reaching nearly 

 to middle of caudal; pectorals short, not reaching first anal spine, 

 i.i to 1.2 in head; ventrals 0.9 to i.o in head, reaching from first to 

 fourth anal spine; original of dorsal to tip of snout 2.4 to 2.5 in body; 

 base of anal 3.4 to 3.5; length of caudal peduncle 2.1 to 2.4 in head, 

 its depth 2.3 to 2.5; caudal fin slightly forked. 



Color olivaceous, sides with six or seven faint vertical bars, most 

 conspicuous in the young (95 mm.); no distinct longitudinal band; 

 a prominent dark lateral spot; no caudal spot. In the larger in- 

 dividuals (190 mm.) the bars and lateral blotch inconspicuous; 

 vertical fins with many dark spots. The nuchal hump is very prom- 

 inent on the larger individuals I have examined, all of which are males. 



Momotomba (5), 100 to 120 mm.; Managua (n), 80 to 135 mm.; 

 Granada (13), 155 to 205 mm. 



Cichlasoma balteatum (Gill & Bransford). 



Heros balteatus Gill & Bransford, Proc. Acad. Nat. Sci., Phila., 

 1877, 184, Lake Nicaragua. 



Head 3.0 to 3.1; depth 2.5 to 2.7; D. xix, 10; A. vin, 7 or 8; 

 scales 7-32-12. In general form this species somewhat resembles the 

 preceding; snout 2.4 to 2.5 in head; maxillary 3.2 to 3.4; mandible 

 2.6 to 2.8; preorbital 3.3 to 3.9; postorbital 2.5 to 2.6; interorbital 

 2.4 to 2.6; diameter of eye 3.1 to 3.3; eye to subopercle 2.3 to 2.6; 

 longest dorsal spine 2.1 to 2.2; longest anal spine 1.9 to 2.0; length 

 of caudal peduncle 2.4 to 2.6; depth of caudal peduncle 2.4 to 2.6; 

 pectoral i.i to 1.2; ventral i.o to 1.2; origin of dorsal to snout 2.4 to 

 2.5; base of anal, 3.4 to 3.5. 



