2U Uv. C. T. Regan on the Fishes of the 



3^ or 4 between lateral line and base of anterior part of soft 

 dorsal. Dorsal XVIII 13, commencing above or sliglitly 

 before axil of pectoral, the spines subeqiial from about the 

 sixth to tlie fourteenth, which are ;^ the length of head, 

 thence increasing to the last, which is more than | the 

 length of head ; soft fin, when laid back, extending to 

 anterior part or even to middle of caudal. Anal VI 9-10. 

 Pectoral i the length of head, not extending as far as the 

 ventral, which nearly or quite reaches the origin of anal. 

 Caudal subtruncate. Caudal peduncle nearly as long as 

 deep. Brownish, with 5 or 6 obscure darker cross-bars, 

 and with a more or less distinct longitudinal band ending in 

 a dark spot on the base of caudal ; vertical fins with series 

 of dark spots or dark undulating lines. 

 Rio Motagua, Guatemala. 



1-2. (186 and 209 mm.) types of Rio Motagua. O. Salvin, Esq. 



the specie.9. 

 3-4. (108 and 131 mm.) Rio Motagua. O. Salvin, Esq. 



25. Cichlosoma pavonaceum. 



Heros pavonaceus, Garman, Bull. Mus. Comp. Zool. viii. 1881, p. 93 ; 



Jord. & Everm. Bull. U.S. Nat. Mus. xlvii. 1898, p. 1538 ; Pellegr. 



Mem. Soc. Zool. France, xvi. 1903, p. 230 (1904). 

 CicMasoma pavonaceum, Meek, Zool. Pub. Columbian Mus. v. 1904, 



p. 209. 



Depth of body equal to length of head, 2f in the length. 

 Eye large, its diameter greater than depth of preeorbital. 

 Maxillary not extending to below anterior margin of eye ; 

 jaws equal anteriorly ; fold of the lower lip not continuous ; 

 cheek with 5 series of scales ; 7 or 8 gill-rakers on the lower 

 part of the anterior arch. Scales 32 (^p^\ Dorsal XVI 12, 

 the spines subequal from the fifth, the last ?-|- the length of 

 head ; soft fin, when laid back, extending beyond base of 

 caudal. Anal V 8. Pectoral extending to above the vent ; 

 ventral to or nearly to origin of anal. Caudal rounded. 

 Brownish, with 10 or 11 obscure dark cross-bars, and with a 

 series of 4-6 blackish spots, usually ocellated and vertically 

 expanded, below the dorsal fin in the posterior part of the 

 body ; a blackish ocellated spot on the upper half of the base 

 of caudal. 



Monclova, Mexico. 



.The types measure from 30-85 mm. The species is said 

 to be allied to C. intermedium. 



