OCT., 1907. FRESH-WATER FISHES MEEK. 141 



depth 1.8 to 1.9; preorbital 5.6 to 5.7 in head; eye 3.8 to 4.3; last 

 dorsal spine 2.3. to 2.5; last anal spine 2.3 to 2.5; pectoral 1.2 to 1.3; 

 length of caudal peduncle 4.0 to 4.2, its depth 2.1 to 2.2; D. xvi to 

 xviii, 1 1 or 1 2 ; base of anal 3.1 to 3.3. 



C. mojarra: Total length 200 to 241 mm. Head 2.5 to 2.6; depth 

 2.1 to 2.2; preorbital 4.9 to 5.1 in head; eye 4.5 to 4.9; last dorsal 

 spine 2.8 to 2.9; last dorsal spine 2.7 to 2.9 ; pectoral 1.2 to 1.3 ; length 

 of caudal peduncle 3.6 to 4.0, its depth 2.4 to 2.6; D. xvii or xviii, 

 ii ; A. vii, 8; base of anal 3.5 to 3.6 in body. 



Caballo Blanco (4), 100 to 205 mm. 



Cichlasoma guttulatum (Gunther). 



This species is quite abundant in Lake Amatitlan. It is the largest 

 fish in the lake and the one most prized for food. 



Mr. Regan in his account of this family in the Biol. Cent.-Amer., 

 20, suggests that Cichlasoma zonatum Meek may be identical with this 

 species. It is, however, a much deeper fish; depth 2.11 ; depth 2.4 to 

 2.6 in C. guttulatum. In C. zonatum the profile is much steeper, the 

 dorsal region more elevated, and the mouth smaller and more inferior, 

 than in C. guttulatum. In C. zonatum the dorsal formula is D. xvii, 

 xviii-io or n ; anal vi, 8 or 9. In the original description the dorsal 

 rays are erroneously given as 6. 



Lake Amatitlan (100), 70 to 220 mm.; San Jose del Idolo (4), 50 

 to 95 mm.; Caballo Blanco (7), 50 to 165 mm. 



Cichlasoma maculicauda Regan. 



Cichlasoma man ana Miller, Bull. Amer. Mus. Nat. Hist., 1907, 116, 

 Rio Motagua, Algeria; Rio Kilagua, Los Amates; Rio Tene- 

 dores. 



There is little doubt, as suggested by Miller, of the identity of C. 

 maculicauda and C. manana. The two specimens examined by me 

 agree well with the description given by Regan and by Miller. 

 Los Amates (2), 220 and 230 mm. 



Cichlasoma nigrofasciatum (Gunther). 



This species is very abundant in Lake Amatitlan. It is also quite 

 common in Lake Atitlan. It lives near shore in the larger aquatic 

 vegetation, on the tender portions of which it feeds. The inhabitants 

 near Lake Atitlan use them for food. This fish never grows large and 

 being full of small bones it is seldom used for food at Lake Amatitlan. 



