Jo t da n and Evcrman n . Fishes of North A merica . 1 525 



Subgenus ARCHOCENTRUS, Gill. 

 1921. CICHLASOMA NIGROFASCIATUM (Giinther). 



Head 3 ; depth 2^. D. XVIII, 8 ; A. X, 7 : scales 4-29-11. Head as high 

 as long, with upper profile convex to snout, where it is straight. Snout of 

 moderate extent ; width of preorhital equal to that of orbit ; eye somewhat 

 nearer to end of snout than to that of operculum, its diameter consider- 

 ably less than width of interorbital space, and length of head; jaws 

 equal in length. Soft dorsal and anal fins with scarcely any scales on their 

 bases, and more or less produced in middle, the longest rays reaching to 

 middle of caudal; dorsal iiu commencing in vertical from humerus, its 

 spines of moderate strength, rather short, length of twelfth somewhat less 

 than that of head ; anal spines as long as, but rather stronger than, those 

 of dorsal fin; caudal rounded, ,-, total length; pectoral as long as head 

 without snout, extending to second or third anal spine; ventral but 

 slightly produced. Lower lip interrupted in middle. Scales on cheek in 

 4 or 5 series. Very dark-colored ; ground color a dark blackish-purplish 

 brown; an arched black baud running from nape round opercular mar- 

 gin to operculuui; a second nearly concentric with first, running from 

 nape to behind pectoral and ventral; third short, like a spot between 

 anterior dorsal spines and lateral line; the following subvertical, slightly 

 inclined backward, and broader than interspaces between them; the 

 penultimate connecting ends of dorsal and anal fins; the last across root 

 of caudal; fins black. Length 3 inches. Nicaragua ; known from Lakes 

 Atitlan, Amatitlan, and Nicaragua. (Giinther.) (niger, black; fasciatm, 

 banded. ) 



Heron nifjrofasciatus, GVNTHKR, Fish. Centr. Am., 452, pi. 74, fig. 3, 1869, Lake Atitlan, 

 Nicaragua. (Coll. Salviu.) 



1922. CICHLASOMA MULTISPIXOSUM (Giinther). 



Head 3; depth 2|. D. XVIII, 9; A. XI, 7; scales 4-29-12. Head as 

 deep as long, with upper profile nearly straight ; snout rather short ; width 

 of preorbital considerably less than that of orbit; eye situated immedi- 

 ately below upper profile, nearer to end of snout than to that of operculum ; 

 its diameter a little less than length of head, and much less than width 

 of interorbital space, which is flat; mouth with jaws equal in length, 

 small, the maxillary not reaching vertical from orbit. Suboperculum with 

 2 series of scales; soft dorsal and anal fins scaly at base, scarcely pro- 

 longed, and not extending to middle of caudal; dorsal fin commencing 

 above humerus, its spines of moderate strength, and rather long, length of 

 eighth to last spine being not much less than that of head ; anal spines 

 stronger, and even a little longer than those of dorsal ; caudal fin rounded, 

 | of total length ; pectoral shorter than head, extending to fifth anal spine ; 

 outer ventral ray produced into a short filament; free portion of tail 

 twice as deep as long. Lower lip interrupted in middle. Three series 

 of scales on cheek. Brownish olive, each scale somewhat darker at base; 

 a blackish band, as broad as a scale, running from eye to a round black 

 spot situated before and below termination of upper part of lateral line; 



