28 ACANTHOPTEEYGII. 



Depth of praeorbital 3 the diameter of eye (in a specimen of 115 mm.) or 



equal to it (in the adult fish) ; caudal peduncle f to | as long as deep . 51. motaguense. 

 IV. D. XVIII 10-12. A. VI-VII 8-10. Priemaxillary spines i? or slightly more than I tlie 

 length of head, extending to above posterior edge of orbit ; maxillary extending to below 

 anterior ^ or middle of eye ; canines strong ; last dorsal spine J the length of head. 

 D. XVIII 10. A. VII 8. Maxillary extending to below middle of eye; 

 depth of prseorbital | to i the diameter of eye (in specimens of 187 



to 195 mm.) 52. managuejise. 



D. XVIII 12. A. VI 9-10. Maxillary extending to below anterior ^ of eye ; 

 depth of prseorbital f to j the diameter of eye (in specimens of 140 to 

 14.4 mm.) 53. dovii. 



41. CichloSOma istlanum, Jord. & Snyder, 1899. 

 Cichlosoma istlanum, Regan, Ann. Mag. N. H. (7) xvi. 1905, p. 326. 



Hah. Mexico, Rio p]alsas and its tributaries. 



42. Cichlosoma Steindaclmeri, Jord. & Snyder, 1899. 

 Cicldosoma steindachneri, Regan, Ann. Mag. N. H. (7) xvi. 1905, p. 441. 



Hab. Mexico, Eio Panuco and its tributaries. 



43. Cichlosoma bartoni, Bean, 1892. 



Cichlosoma bartoni, Regan, Ann. Mag. N. H. (7) xvi. 1905, p. 445 



Hab. Mexico, Rio Panuco and its tributaries. '.'' 



44. Cichlosoma beani, Jord., 1888. (Tab. VI. fig. 1.) 



Cichlosoma heard, Regan, Ann. Mag. N. H. (7) xvi. 1905, p. 328. 

 Hab. Mexico, rivers of Sinaloa and Jalisco. 



45. Cichlosoma mento, Vaill. & Pellegr., 1902. 

 Cichlosoma inento, Regan, Ann. Mag. N. H. (7) xvi. 1905, p. 329. 



Hab. Southern" Mexico, Rio Negro. 



46. Cichlosoma urophthalmus, Giinth., 1862. 



Cichlosoma urophtlialmus, Regan, Ann. Mag. N. H. (7) xvi. 1905, p. 332. 



Hah. Mexico, Yucatan ; British HonduRzIS ; Gqateaiala, Lake Peten (i'aiJyiu). 



47. Cichlosoma trimaculatum, Gunth., 1869. 



Cichlosoma tiimaculaium, Regan, Ann. Mag. N. H. (7) xvi. 1905, p. 333. 



Hah. Southern Mexico, Oaxaca and Tehuantepec ; Guatemala, Iluamuchal and 

 Cliiapam (^Salvin). 



