128 Field Museum of Natural History — Zoology, Vol. X. 



Soft dorsal and caudal fins with white spots, these sometimes form- 

 ing bars. In 1907* I suggested that this species was probably the 

 male of Cichlasoma longimanus (Giinther). Since I secured only the 

 one fonn in Costa Rica and find both sexes represented, it is e\ddent 

 that the two species are not the same. 



La Victoria (4), 140 to 205 mm.; Zent, April 12 (20), 77 to 200 mm. 

 Zent, April 15 (8), 68 to 98 mm. 



Cichlasoma spilotum Meek. 



Cichlasoma spilotum Meek, Pub. Field Mus., Zool. Ser., x, 191 2, 73 

 (La Victoria, Costa Rica). 



This species is known only from material listed below. It is easily 

 distinguished from the other Costa Rica Cichlasoma by the decurved 

 profile, small subinferior mouth, and by the prominent black spot on 

 middle of the side below the lateral line. Vertebrae 15 + 17 = 32. 



La Victoria (11), 95 to 190 mm. 



Neetroplus fluviatilis Meek. 



Neetroplus fluviatilis Meek, Pub. Field Mus., Zool. Ser., x, 191 2, 74 

 (Costa Rica River near Guapilis). 



This species resembles in form Neetroplus nematopus Giinther, from 

 Lake Nicaragua. It differs from that species in a more convex inter- 

 orbital, a more decurved profile, a more slender body, and in having 6 

 or 7 faint though well defined dark bars on the sides. The specimens 

 of Neetroplus nematopus in this museum from Nicaragua are uniform 

 brownish with a faint dark bar downward and backward from the 

 9" and 10'' dorsal spines; a nuchal crest is also developed on some of 

 these specimens 85 mm. in length, and is very prominent on a specimen 

 135 mm. On the two specimens of A^ fluviatilis there is no nuchal 

 crest. 



Costa Rica River (2), no to 123 mm, 



Herotilapia multispinosa Giinther. 



Herotilapia multispinosa Giinther, Fishes Cent. Amer., 1869, 453, 

 pi. Lxxiv, fig. 2 (Lake Managua). 



In general form and appearance this species resembles Cichlasoma 

 spilurum, from which it is easily distinguished by its tricuspid incisor- 

 like teeth. Vertebtae i3-fi5 = 28. 



Zent, April 12 (2), 77 to 135 mm.; Zent, April 14 (i), 80 mm, 



* Pub. Field Mus., Zool. Ser., vn, 1907, 126. 



