CICHLOSOMA. 23 



22. Cichlosoma octofasciatum, Eeo;an, 1903. 



Cichlosoma octofasciatum, Regan, Ann. Mag. N. H. (7) xvi. 1905, p. 331. 



Hab. Southern xVIexico, Rio de Savabia (BuMer) ; British Honduras (Robertson). 



The systematic position of this species is rather doubtful, as the dentition of some 

 specimens is very like that of the more generalized members of the subgenus 

 ParaiMenia. Other characters seem to indicate relationship with C. nigrofasciatum. 



23. Cichlosoma spilurum, Gunth., 1862. 



Cichlosoma sjnlurwn, Regan, Ann. Mag. N. H. (7) xvi. 1905, p. 75. 

 Hab. Guatemala, Rio Motagua and Lake Yzabal [Salvin). 



24. Cichlosoma immaculatum, Pellegr., 1904. 



Cichlosoma immaculatum, Regan, Ann. Mag. N. H. (7) xvi. 1905, p. 77. 

 Hab. Guatemala, Rio Polochic. 



25. Cichlosoma Spinosissimum, Vaill. & Pellegr., 1902. 



Cichlosoma spinosissimuin, Regan, Ann. Mag. N. H. (7) xvi. 1905, p. 76. 



Hab. Guatemala, Rio Polochic. 



26. Cichlosoma centrarchus, Gill & Bransf., 1877. (Tab. IV. figg. 1, 1 a.) 



Cichlosoma centrarchus, Regan, Ann. Mag. N. H. (7) xvi. 1905, p. 77. 



Hab. Lake Nicaragua. 



Section 3. Astatheros, Pellegr., 1904. 



Teeth of the outer series usually rather more numerous and less strongly enlarged anteriorly than in Theraps, 

 but in the more specialized forms reduced in number and with the anterior pair in the upper jaw and 

 the two anterior pairs in the lower strongly enlarged. The maxillary never extends beyond the vertical 

 from the anterior edge of the eye ; the priemaxillary spines measure from a little less than 4 to slightly 

 more than \ the length of head ; the upper profile of the snout is straight aud oblique. The body is 

 rather deep (depth 1| to 21 in the length). The dorsal fin has XIV-XVII 10-15 rays and is more or 

 less scaly at the base posteriorly; the anal has V-VIII 8-10 rays; the pectoral is usually elongate (in 

 C. lieterodontum and C. altifroiis it extends to above the origin of the anal, in the other species it 

 is longer) ; the caudal is subtruuoate, rounded, or slightly emargiuate with rounded lobes. The gill- 

 rakers are usually more numerous than in most other species of the genus (usually 11 to 13 on the lower 

 part of the anterior arch, but only or 10 in C. citrlnelluni, 9 in 0. lohochilus, 8 in C. eri/tkrcnim). 



Eleven species from Southern Mexico and Central America, one ranging into 

 Colombia. 



Synopsis of the Species. 

 I. Lips normal ; anterior teetli not strongly enlarged. 

 A. Fourth to sixth dorsal spines longer than the rest. 



D. XVI 10-11. A. VI 8-9. 11 or 13 gill-rakers on the lower part of anterior arch. 



Pectoral extending to above the middle of anal 27. robertsoni. 



Pectoral extending to the posterior end of anal 28. lonrjimanus. 



