American Cichlid Genus Ciclilosoma. 233 



2 or 2], between lateral line and base of anterior part 

 of soft 'dorsal. Dorsal (XVI-XVII) XVIII 10-12 (13), 

 commencing above the axil of pectoral, the spines subequal 

 from about the seventh to fourteenth, whicli are about ^ the 

 length of head, thence increasing to the last, which is | the 

 length of head or more; the soft fin, when laid back, ex- 

 tending to anterior \ of caudal. Anal (IV) V-VI 8-10 (11). 

 Pectoral 4-| the length of head, usually not extending so 

 far as the ventral, which does not quite reach the origin of 

 anal. Caudal subtruncate. Caudal peduncle a little deeper 

 than long. Brownish^ with a broad dark band running 

 from the opercuhim to the middle of the side and then 

 upwards to the posterior part of the spinous dorsal ; vertical 

 fins usually with dark stripes or series of spots. 

 Guatemala. 



a. C. intermedium. 



Scales forming the dark band each light at the base and 

 with a blackish vertical stripe near the posterior margin ; a 

 narrow longitudinal band from the angle of the broader 

 band to the base of caudal, where it forms a vertically 

 expanded spot. 



1-3. (133-155 mm.) types of the Lake Peteu. O. Salvin, Esq, 



species. 



b. C. angidiferum. 



Scales forming the dark band nearly uniformly blackish ; 

 a dark blotch on the caudal peduncle. 



1-2. (96 and 113 mm.) types Eio de Sauta Isabel. O. Salvin, Esq. 



of H. anqulifer. 

 3-5. (134-177 mm.). R. Sta, near Cajabon. J. C. Sarg, Esq. 



24. Ciclilosoma Guentheri. 



Heros ohlongus {non Casteln.), Giinth. Trans. Zool. See. vi. 1869, p. 464 ; 



Jord. & Everm. Bull. U.S. Nat. Mus. xlvii. 1898, p. 1535. 

 Cichlasoma Gimtheri, Pellegr. Mt5m. Soc. ZcjoI. France, xvk 1903, 



p. 215 (1904). 



Depth of body 2^-2f in the length, length of head 3^-3?- 

 Snout as long or nearly as long as postorbital part of head. 

 Diameter of eye 3^-4i in the length of head, interorbital 

 width 2.\-3. Depth of prseorbital 1-1 A the diameter of eye. 

 Maxillary not extending to the vertical from anterior margin 

 of eye ; jaws equal anteriorly ; fold of the lower lip con- 

 tinuous or not ; cheek with 5 series of scales ; 7 or 8 gill- 

 rakers on the lower part of anterior arch. Scales 32-33 ^, 



Ann. tC; Mag. N. Hist. Ser. 7. Vol. xvi. 10 



