CICHLOSOMA. 21 



times in the length of the head in four specimens of the latter species, 85 to 260 mm. 

 in total length. C. gadovii is subject to the same range of variation in colour- 

 markings as C . fenestratum ; in some specimens the dark cross-bars are strongly marked 

 and the longitudinal band is scarcely visible, in others the cross-bars are faint and the 

 longitudinal band is very strong. It is curious that Dr. Meek, who has had the 

 privilege of collecting these fishes, should attempt to distinguish in this respect between 

 C. parma [= fenestratum), with the lateral band faint or absent, and C. melaimram 

 (—gadovii), with a conspicuous dark lateral band. 



12. CicMosoma anguliferum, Giinth., 1862. 



Cichlosoma intermedium, var. anguliferum, Regau^ Ann. Mag. N. H. (7) xvi. 1905, p. 233. 

 Hah. GuATE:i[ALA, Rio de Santa Isabel [Sahin), Rio Santa near Cahabon [Sarg). 



The slight difference in colour-markings between this species and the next appears 

 to be correlated with other slight peculiarities, so that I am inclined to provisionally 

 recognize them as distinct. In C. a'ngulife7'um the interorbital space is a little wider 

 and the dorsal spines rather higher than in C. intermedium, the last spine measuring 

 rather more than f the length of the head in the former and distinctly less than f of 

 the head in the latter species. 



13. Cichlosoma intermedium, Giinth., 1862. 



Cichlosoma intermedium (part.)j Eegan, Anu. Mag. N. H. (7) xvi. 1905, p. 232. 

 Hal. Guatemala, Lake Peten [Sa.lvin). 



14. CicMosoma pavonaceum, Garman, 1881. 



Cichlosoma pavonaceum, Regan, Ann. Mag. N. H. (7) xvi. 1905, p. 234. 

 Hah. NoETHEKN Mexico, Monclova in Coahuila. 



15. Cichlosoma sieboldii, Kner & Steind., 1864. 



Cichlosoma sieboldii, Regan, Ann. Mag. N. H. (7) xvi. 1905, p. 235. 



Hah. PANAiiA. — Colombia. 



Heros deppii, Heckel, 1840, from Mexico, may be allied to this species. 



16. Cichlosoma godmani, GUuth., 1862. 



Ciciilosoma godmanni, E.egan, Ann. Mag. N. H. (7j xvi. 1905, p. 235. 

 Hah. Guatemala, Rio Cahabon [Salvhi). 



17. Cichlosoma irregulare, Giinth., 1862. 



Cichlosoma irregulare, Regan, Ann. Mag. N. H. (7) xvi. 1905, p. 236 \ 



Hah. Guatemala, Lake Yzabal, Rio Geronimo, Rio Usumacinta (Salvin), Lake San 

 Cristobal [Sarg). 



