220 Field Columbian Museum — Zoology, Vol. V. 



tinct ; a broad lateral band running from just above pectoral to middle 

 of caudal peduncle ; no black caudal spot ; fins dusky, unicolor. Length 

 about 15 inches. 



This species resembles Cichlasoma parma, but it is more slender, and 

 the dark lateral band is much more prominent. 



209. Cichlasoma eigenmanni Meek. 



Cichlasoma eigenmanni Meek, Field Col. Mus. Pub. 65, 1902, 119; 

 Venta Salada. 



Upper tributaries of the Rio Papaloapam. 



Head 3K; depth 27^; D. x-vn, 14; A. v, 10; scales 6-33-1 1. Body 

 elongate; profile convex, not very steep; mouth small, low, terminal; 

 jaws subequal; maxillary not reaching anterior margin of orbit; its 

 length 3! in head; mandible 3^ in head; preorbital 3^3 in head; 

 postorbital i]4.\ snout 2\\ lips thin, the lower with a broad frenum; 

 eighth dorsal spine 2% in head, the last spine 2]A,\ dorsal and anal 

 rays not produced, their tips scarcely reaching base of caudal; pec- 

 toral 1^3 in head; ventral if, their tips not reaching vent; least depth 

 of caudal peduncle t.\ in head, its length being about \ greater than 

 its depth. 



Color brownish, six indistinct dark bands on sides; a dark lateral 

 band which ends in a black spot at base of caudal; fins all plain. 

 Length 7 inches or over. 



210. Cichlasoma nebulifer (Gunther). 



Chromis nebulifer Gunther, Proc. Zool. Soc. London, i860, 318; 

 Mexico. 



Heros nebulifer Gunther, Cat., iv, 297, i860; Mexico. 



Cichlasoma nebuliferun Jordan & Evermann, Bull. 47, U. S. Nat. 

 Mus., 1898, 1524. 



Eastern lowland streams of the Isthmus of Tehuantepec. (San 

 Juan Evangelista.) 



Head 3|; depth 2%; D. xvn or xvm, 10 or 11 ; A. vi, 8 or 9; scales 

 6-36-1 1. Body elongate, much compressed; profile much curved, its 

 anterior half very steep; mouth small, subinferior, maxillary 4 in head; 

 mandible 3^2 ; lips moderately thick, the lower with a broad frenum; 

 jaws equal, the anterior teeth rather strong; about 5 rows of embedded 

 scales on the cheeks; preorbital 2% in head; postorbital 2%; inter- 

 orbital very convex, 2% in head ; diameter of eye 4 in head ; dorsal spines 

 rather high, eighth 2% in head, the last spine 2]/% ', middle rays of dor- 

 sal not produced, their tips reaching base of caudal; pectoral i| in 

 head; ventral rays not produced, their tips not reaching to first anal 

 spine ; ventral 1 % in head ; caudal fin truncate ; least depth of caudal 

 peduncle 2 l /& in head, its length about l 4> greater than its depth. 



