American Cicldid Genus Ciclilosoma, ,825 



ns long as postorbital part of head. Diameter of eye 5^^ in 

 the length of the head, interorbital width Si. Depth of 

 pneorbital 1| the tiia meter of eye. Maxillary slightly 

 exposed, extending nearly to below the eye ; pi'seraaxillaiy 

 processes extending to above anterior | of eye; jaws equal 

 anteriorly, the anterior pair of teeth in the upper jaw the 

 largest and in the lower jaw somewhat smaller than the next 

 2 on eaeh side, which are slightly enlarged; fold, of the 

 lower lip continuous ; cheek with 7 series of scales ; 9 gill- 

 rakers on the lower part of anterior arch. Scales 31 ^5, 31 

 between lateral line and base of anterior I'ays of soft dorsal. 

 Dorsal XY 12, the spines subequal from tlie sixth to the 

 twelfth, thence increasing to the last, which is a little more 

 than I the length of head ; soft fin, when laid back, extending 

 to middle of caudal. Anal IV 10. Pectoral less than § the 

 length of head, not extending to above the anal ; rentral 

 extending to origin of anal. Caudal rounded. Caudal 

 peduncle nearly as long as deep. Olivaceous, with numerous 

 small blackish spots on head, body, and dorsal and caudal 

 fins. 



Barbadoes. 



1. (218 mm.) t}-pe of the Barbadoes. Sir R. ScliomLin<ik. 



species. 



49. Cichlosoma tetracanthus. 



Ccntrarchiis tetracanthus, Cuv. & Val. Hist. Nat. Poiss. vii. p. 4G0 



(1831). 

 Chromis fuscomaculatus, Guiclien. Hist. Cuba, Poiss. p. 78 nl. ii. fi"- o 



(1853;. 

 AcarafuscovHicuIata, Giinlb. Cat. Fisb. iv. p. 282 (1802). 

 Acora tetracanthus, Steind. Denliscbr. Ak. Wieu, xxiii. 1864, p. 60. 

 Heros tetracanthus, Jord. & Eveim. Bull. U.S. Nat. Mus. xlvii. 1898, 



p. 1539; Eigpiim. Bull. U.S. Fish. Comm. 1902, p. 230, figs. 12 



& 13. 

 Heros fusccmacvJotus, Pellegr. Mem. See. Zool. Frnnee, xvi. 1903. p ^•'>7 



(1904). 

 Heros tetracanthus torralbasi, Eigenm. I. c. fig. 11. 

 Heros tetracanthus griseus, Eigenm. t. c. p. 233, tig. 14. 

 Herts tetracanthus latus, Eigeum. t. c. p. 234, fig. 15. 

 Heros tetracanthus cinctus, Eigeum. /. c. fig. 16. 

 Heros nit/riccms, Eigenm. t. c. p. 235, fig. 17. 



De[)th of body 2-2? in the length, length of head 2i-3. 

 Snout shorter than postorbital part of head. Diameter of 

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

 Depth of prseorbital r-4 the diameter of eye. JMaxillary 

 slightly exposed, extending to below anterior margin of eye ; 

 prtemaxillary processes extending to above anterior \ of eve; 

 jaws ccpial anterioily, or the lower slightly projecting rantcrior 



