CICHLOSOMA. 25 



30. Cichlosoma heterodontum, Vaill. & Pellegr., 1902. 



Cichlosoma heterodontus, Regan^ Ann. Mag. N. H. (7) xvi. 1905, p. 241. 



Hab. Southern Mexico, Tequixistlan in Oaxaca (Gadow), Tehuantepec. 



Dr. Meek * considers me to be in error in placing his C. evermanni in the synonymy 

 of C. heterodontum, and would distinguish between G. evermanni, with all the teeth 

 conical and the fold of the lower lip continuous, but freer at the sides than in front, 

 and C. heterodontum, with some of the teeth worn and ending in a flat circular 

 surface and the fold of the lower lip interrupted. The examination of a series of 

 specimens of the closely allied C. macracanthus has shown me that both conditions 

 of the dentition and of the lower lip are to be found in that species. Three small 

 specimens of C. heterodontum were collected by Dr. Gadow at Tequixistlan. The 

 largest (125 mm.) has some of the teeth worn and the fold of the lower lip continuous. 

 The others (53 and 76 mm.), formerly referred by me to C. macracanthus, have 

 conical teeth, but the fold of the lower lip is interrupted. 



31. Cichlosoma altifrons, Kner & Steind., 1863. 



Cichlosoma altifrons, Regan, Ann. Mag. N. H. (7) xvi. 1905, p. 242. 



Hah. Panama. — Colombia. 



32. Cichlosoma rostratum, Gill & Bransf., 1877. (Tab. VII. fig. 1.) 



Cichlosoma rostratum, Regan, Ann. Mag. N. H. (7) xvi. 1905, p. 243. 



Hah. Lake Nicaragua. 



33. Cichlosoma margaritiferum, Gtinth., 1862. 



Cichlosoma margaritiferum, Regan, Ann. Mag. N. H. (7) xvi. 1905, p. 316. 



Hah. Guatemala {Salvin). , 



34. Cichlosoma citrinellum, Giinth., 1864. 



Cichlosoma citrinellum, Regan, Ann. Mag. N. H. (7) xvi. 1905, p. 316. 

 Hab. Lakes Managua {Dow) and Nicaragua {Salvin). 



35. Cichlosoma erythrseum, Giinth., 1869. 



Cichlosoma erijthroEum, Regan, Ann. Mag. N. H. (7) xvi. 1905, p. 318. 

 Hah. Lake Managua {Bow). 



36. Cichlosoma lobochilus, Giinth., 1869. 



Cichlosoma lobochilus, Regan, Ann, Mag. N. H. (7) xvi. 1905, p. 318. 

 Hah. Lake Managua {Dow). 



* Proo. BioL Soc. Washington, xviii. 1905, p. 244. 



BIOL, centr.-amer., Pisces, October 1906. E 



