126 Field Musp:um of Natural History — ^ Zoology, Vol. X. 



Cichlasoma spilurum Giinther. 



Cichlasoma spilurum Giinther, Cat., iv, 1862, 289 (Yzabal & Rio 

 Motagua, Guatemala). 



Cichlasoma septemfasciatus Regan, Ann. & Mag. Nat. Hist., 1908, 

 461 (Rio Iroquois). 



The specimens from Turrubales are identical with those taken on the 

 Atlantic Side. Those from the Rio Higueron are more robust anteriorly, 

 and only the three and anterior bars and the one at the base of caudal 

 are distinct, the others are quite faint. On the middle of the side the 

 three anterior bars form three black lateral blotches. This species is 

 very abundant in the East Coast streams of Costa Rica, but rather 

 scarce on the Pacific Side. 



I have compared the specimens listed below with several specimens 

 from the Rio Motagua, Guatemala, and find no specific differences. 



Guapilis (48), 45 to no mm.; Zent, April 12 (85), 36 to 120 mm.; 

 Parismina (36), 60 to no mm.; La Victoria (19), 55 to 120 mm.; Zent, 

 April 15 (11), 45 to 100 mm.; Cuba River (4), 70 to 105 mm.; Tur- 

 rubales (i), 97 mm.; Turrubales (i) 103 mm. (Alfaro); Rio Higueron 

 (24), 45 to 95 mm. (Alfaro); Chitaria (2), 50 to 76 mm. (Alfaro). 



Cichlasoma alfari Meek. 



Cichlasoma alfari Meek, Pub. Field Mus., Zool. Scr., vii, 1907, 148 

 (Turrialba) . 



This species has been taken at Turrialba, apparently reaching a 

 higher altitude than any other cichlid in Costa Rica. Vertebra? 12 + 16 

 = 28. 



Parismina (5), 40 to 165 mm.; Costa Rica River (3), 133 to 178 mm.; 

 Virginia (i), 165 mm.; Guapilis (19), 80 to 175 mm.; Turrialba (4), 60 

 to 93 mm. (Alfaro); Tucurrique (7), 65 to 135 mm. (Alfaro). 



Cichlasoma lethrinus Regan. 



Cichlasoma lethrinus Regan, Ann. & Mag. Nat. Hist., 1908, 462 

 (Rio Iroquois). 



This species is close to Cichlasoma alfari. It differs from that 

 species in having a slightly decider body, a larger eye, a straighter pro- 

 file and higher dorsal spines. The dark bars on side are prominent 

 and the lateral band less defined than C. alfari. Vertebrae 13 + 15 = 28. 



Zent, April 12 (63), 40 to 160 mm.; Zent, April 15 (13), 70 to 140 

 mm.; Parismina (11), 50 to 100 mm.; La Victoria (15), 75 to 150 mm.; 



