434 Mi: C. T. Regan on the Fishes of the 



40 below the lateral line. Scales in a transverse series 

 jgj. Dorsal XV (XVI) 12-13, the last spine about f the 

 length of head, the soft fin not scaly. Anal V (8) 9-10. 

 Pectoral nearly | the length of head, Cavidal rounded. 

 Caudal peduncle longer than deep. Head, body, and vertical 

 fins with dark spots ; a series of dark blotches along the 

 middle of the side. 



Lake Peten, Guatemala. 



1-4. (260-415 mm.) types of Lake Peten. O. Salvin, Esq. 



the species. 



Herichthys. 



Herichth/s, Baird & Girard, Proc. Ac. Philad. 1854, p. 25. 



Heros (part.), Gunth. Cat. Fish. iv. p. 290; Jord. & Everm. Bull. U.S. 



Nat. Mus. xlvii. 1898, p. 1537 ; Pellegr. M6m. Soc. Zool. France, xvi. 



1903, p. 220 (1904). 

 Neetroplus (part.), .lord. & Snvder, Bull. U.S. Fish. Coram, xix. 1899, 



p. 14G ; Pelleo-r. Mem. Soc. Zool. France, xvi. 1903, p. 245 (1904) ; 



Meek, Zool. Pub. Columbian Mus. v. 1904, p. 221. 

 Cichlasoma (part.), Meek, t. c. p. 205. 



Closely allied to Cichlosoma and perhaps most nearly to 



C. heterodontus, differing only in that the anterior teeth of 

 the outer series in each jaw are compressed, pointed in the 

 young, truncate in the adult. 



Three species from IMexico and Central America. 



Key to the Species. 



I. Anal with 5 (exceptionally 6) spines. 



D. XV-XVII 10-12. A. V'(VI 7) 8-9. Sc. 



27-30 j^fjg 1 . cyanoguttatus, 



J). XVI 13. A. V 10. Sc. 31 ^2 2. Bocourti. 



II. Anal with 6 or 7 spines. 



P. XYI-XVIII 11-12. A. VI- VII 9-10. Sc. 



30 jj^ . . 3. Geddesi. 



1. Herichthys cyanoguttatus. 



Herichthys cyanorjuttatus, Baird & Girard, Proc. Ac. Philad. 1854, p. 25, 



and Rep. U.S. Mex. Bound. Surv., Zool. p. 30, pi. iv. figs. 9-12 (1859). 

 Heros cyanoguttatm, Glinth. Cat, Fi.sh. iv. p. 290 (1862); Jord. & 



Gilb. Bull. U.S. Nat. Mus. xvi. 1882, p. 608 ; Jord. & Everm. Bull. 



U.S. Nat. Mus. xlvii. 1898, p. 1537; Everm. & Goldsborough, Bull. 



U.S. Fish. Comra. xxi. 1902, p. 157 ; Pellegr. jNLem. Soc. Zool. France, 



xvi. 1903, p. 231 (1904). 

 Neetroplus carpintis, Jord. & Snyder, Bull. U.S. Fish. Comm. xix. 1899, 



p. 146, fig. 22 ; Jord. & Everm. t. c. p. 3175 ; Pellegr. t. c. p. 246 ; 



Meek, Zool. Pub. Columbian Mus. v. 1904, p. 221. 

 Cichlasoma cyanoguttatum, Meek, t. c. p. 215. 



