336 Mr. (/. T. Regan on the Fishes of the 



1 2. (91 and 134 mm.) types Lake Peten. O. Salvin, Esq. 



of the species. 

 3. (68 mm.) Stann Creek, Britisli Rev. J. Rubertson. 



Honduras. 



61. Cichlosoma Friedrichstahli. 



Heros Friedrichstahli, Heck. Ann. Mus. Wien, ii. 1840, p. 381 ; Giinth. 



Cat. Fish. iv. p. 294 (1862). 

 Heros Friedrichstahli (part.), Giinth. Trans. Zool. Soc. vi. 1869, p. 459. 

 Heros motnr/uensis (part.), Pellegr. Mem. Soc. Zool. France, xvi. 1903, 



p. 234 (1904). 



Depth of body 2|-2f in the length, length of head 2f- 

 2f. Snout only a little longer than eye^ the diameter of 

 which is nearly 4 in the length of head, and equal to the 

 interorbital width. Dejjth of prseorbital |-5 diameter of 

 eye. Maxillary exposed distally, extending to below 

 anterior margin of eye ; prsemaxillary processes extending 

 to above posterior 1 of eye; lower jaw projecting; fold of 

 the lower lip continuous; upper jaw with a pair of strong 

 canines situated close together; lower jaw with 2 pairs of 

 canines, which are well-separated ; cheek with 7 series of 

 scales ; 6 or 7 gill-rakers_, sometimes preceded by 2-3 rudi- 

 ments, on the lower part of anterior arch. Scales 30 ^, 

 2^ between lateral line and base of anterior rays of soft 

 dorsal. Dorsal XVIII 9-10, the spines slightly increasing 

 in length to the last, which is a little more than ^ the length 

 of head ; the soft fin, when laid back, extending to anterior 

 f. of caudal. Anal VII-VIII 8. Pectoral § the length of 

 head, extending to above origin of anal ; ventral extending 

 to origin of anal. Caudal rounded. Caudal peduncle 5 as 

 long as deep. Olivaceous, with 7 or 8 irregular dark cross- 

 bars forming a series of blotches below the lateral line ; a 

 dark stripe from upper part of eye to operculum, and another 

 from lower part of eye to suboperculum ; cheeks, opercular 

 bones, and lower part of body with dark spots; vertical fins 

 with dark spots. 



Lake Peten, Guatemala. 



1-2. (121 and 129 mm.) Lake Peten. O. Salvin, Esq. 



62. Cichlosoma mutaguense. 



Heios motayimisis, Giinth. Trans. Zool. Soc. vi. 1869, p. 462, pi. Ixxvii. 



fig. 2; Jord. & Everm. Bull. U.S. Nat. Mus. xlvii. 1898, p. 1534. 

 Heros motaqiiensis (part.), Pellegr. Mem. Soc. Zool. France, xvi. 1903, 



p. 234 (1904). 



Depth of body 22-2.^ in the length, length of head 2|-3. 



