326 Mr. C. T. Regan on the Fishes of the 



pair of teeth in the upper jaw and 2-3 on each side in the 

 lower enlarj^ed, formin<^ weak canines ; fokl of the lower lip 

 continuous ; cheek with 7-10 series of scales ; 8-10 gill- 

 rakers on the lower part of anterior arch. Scales 28-31 

 ^^., 3 or 4 between lateral line and base of anterior rays of 

 soft dorsal. Dorsal XV-XVI 10-12, the spines sbghtly 

 increasing in length to the last, which is ^-| the length of 

 head, or sometimes the middle spines subequal ; soft fin, 

 when laid back, extending to anterior ^^ of caudal. Anal"^ 

 IV 8-10. Pectoral |-f the length of head, usually not 

 extending to above the anal ; ventral not extending to origin 

 of anal. Caudal subtruncate or rounded. Caudal peduncle 

 5— I as long as deep. Olivaceous, with dark spots on head, 

 body, and vertical fins ; sometimes dark cross-bars on the 

 body and a dark spot below the origin of the lateral line, 

 another on the middle of the side, and a third on the base of 

 the caudal. 

 Cuba. 



1. (151 mm.) Cuba. Zoological Society. 



2. (8(> mm.) Puiar del 11 io. Trof. C. II. Eigenmann. 

 3-4. (80 and 97 mm.) Calabazar. Prof. C. H. Eigenmann. 

 5-6. (98 and 118 mm.) San Antonio. Prof. C. H. Eigenmann. 



7-12. (102-154 mm.) Palacios. Prof. C. H. Eigenmann, 



13-27. (64-121 mm.) San Cristobal. Prof. C. H. Eigenmann. 



50. Cichlosoma istlanum. 



? Cichlasoma Stemdddmeri, Jord. & Snyder, Bull. U.S. Fish. Conim. xix. 



1899, p. 143, fig. 20; Jord. & Everm. Ball. U.S. Nat. Mas. xlvii. 



liJOO, p. 3173; Pellegi-. Mem. Soc. Zool. France, xvi. 1903, p. 206 



(1904) ; Meek, Zool. Pub. Columbian Mus. v. 1904, p. 211, iig. 67. 

 Heros Mlanus, Jord. & Snvder, t. c. p. 144 ; Jord. & Everm. t. c. 



p. 3174 ; PellegT. t. c. p. 228. 

 Cichlasoma istlanum, Meek, t. c. p. 213, fig. 69. 



Depth of body 2|-2f in the length, length of head 2|-2f . 

 Snout as long as postorbital part of head. Diameter of eye 

 4 j in the length of head, iuterorbital width Sl~o^. Depth of 

 prseorbital a little less than the diameter of eye. Maxillary 

 slightly exposed, not extending to below the eye; prse- 

 maxillary processes extending nearly to above middle of 

 eye; jaAvs equal anteriorly; fold of the lower lip sub- 

 continuous ; upper jaw with the 2 anterior teeth of the outer 

 series more or less distinctly differentiated as a pair of 

 canines ; lower jaw with 2 or 3 pairs of rather weak canines ; 



* Two specimens from San Cristobal have curiously malformed anal 

 fins. In each case the posterior part of the fin is wanting; in one there 

 are 10 spines and no soft rays, in the other 8 spines and 3 soft rays. 



