March, 1914. List of Fishes of Costa Rica — Meek. 125 



similar dentition, and form a series from the strictly conical teeth of 

 most of the Cichlasoma nearly to the strictly compressed incisor teeth 

 of Neetroplus. The fact that the dentition of the species listed under 

 these genera vary so greatly, apparently with age, renders this character 

 of little generic or specific value. Vertebrae 16 + 16 = 32. 



Cichlasoma friedrichsthali (Heckel). 



Heros friedrichsthali Heckel, Flusfische Brazil, 1840, 381 (Rio San 

 Juan, Nicaragua). 



The specimens listed below have 6 with 7 anal spines, 2 with 8, 

 and 6 with 9. The smaller specimens have from 7 to 9 dark lateral 

 bars with a faint broken lateral band; the larger ones have a more 

 prominent lateral band with the bars faint or wanting. Usually a 

 black spot on suboperculum ; soft dorsal, anal and caudal fins with dark 

 dots. 



La Victoria (i), 128 mm.; Zent, April 12 (5), 62 to 108 mm.; Paris- 

 mina (3), 60 to 125 mm.; Zent, April 15 (5), 90 to 105 mm.; Parismina 

 (4), 35 to 85 mm.; La Victoria (8), 40 to 220 mm.; Virginia (i), 145 mm.; 

 Zent, April 12 (2), :^^ to 170 mm.; Guapilis (6), iii to 205 mm.; Cuba 

 River (i), 205 mm.; Costa Rica River (2), 205 to 245 mm. 



Cichlasoma citrinellum (Giinther). 



Heros citrinellum Gunther, Proc. Zool. Soc. Lond., 1864, 153 (Lake 

 Nicaragua) . 



Cichlasoma citrinellum Regan, Biol. Cent. Amer., 1908, 187 (Juan 

 Vinas, Costa Rica). 



I did not obtain any specimens of this species in Costa Rica. It is 

 very abundant in the lakes Nicaragua and Managua and in the smaller 

 neighboring lakes. It is interesting, though rather unexpected, to find 

 this species at an altitude of over 3,000 feet in Costa Rica and not in 

 the streams of the lower lands. No doubt it occurs there but is prob- 

 ably very scarce. 



Cichlasoma altifrons (Kner & Steindachner). 



Heros altifrons Kner & Steindachner, Sitzb. Ak. Bayem., 1863, 223; 



— Kner & Steindachner, Abhandl. Ak. Bayem., x, 1866, 11, fig. i 



(Chiriqui, Western Veragua). 

 Cichlasoma altifrons Regan, Ann. & Mag. Nat. Hist., 1908, 463 



(Rio Grande de Terraba, Costa Rica). 

 I did not obtain any specimens of this species. 



