CICHLOSOMA. 
bo 
or 
30. Cichlosoma heterodontum, Vaill. & Pellegr., 1902. 
Cichlosoma heterodontus, Regan, Ann. Mag. N. H. (7) xvi. 1905, p. 241. 
Hab. Sournern 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 C. 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. 
Hab. PANAMA.——COLOMBIA. 
32. Cichlosoma rostratum, Gill & Bransf., 1877. (Tab. VII. fig. 1.) 
Cichlosoma rostratum, Regan, Ann. Mag. N. H. (7) xvi. 1905, p. 243. 
Hab. LakEt NICARAGUA. 
33. Cichlosoma margaritiferum, Giinth., 1862. 
Cichlosoma margaritiferum, Regan, Ann. Mag. N. H. (7) xvi. 1905, p. 316. 
Hab. Guatemata (Salvin). 
34, Cichlosoma citrinellum, Giinth., 1864. 
Cichlosoma citrinellum, Regan, Ann. Mag. N. H. (7) xvi. 1905, p. 316. 
Hab. Laxes Manacvua (Dow) anp Nicaragua (Salvin). 
85. Cichlosoma erythreum, Giinth., 1869. 
Cichlosoma erythreum, Regan, Ann. Mag. N. H. (7) xvi. 1905, p. 318. 
Hab. Lax Manaeva (Dow). 
36. Cichlosoma lobochilus, Giinth., 1869. 
Cichlosoma lobochilus, Regan, Ann. Mag. N. H. (7) xvi. 1905, p. 318. 
Hab. Lake Manaeva (Dow). 
* Proc. Biol. Soc. Washington, xviii. 1905, p. 244. 
BIOL. CENTR.-AMER., Pisces, October 1906. | E 
