404 DE. GtJNTHER ON THE PISHES OF CENTRAL AMERICA. 



B. The fresh waters north of the Lakes of Managua and Nicaragua, emptying into the 

 Atlantic. — To this province belong the fishes collected in the Rio Usumacinta [U.] (and 

 in its tributaries Rio de Santa Isabel, Rio Chisoy, and Rio San Geronimo), in the Rio 

 Motagua [M.], and in the Rio Cahabon (Yzabal) [Y.]. 



Eleotris dormitatrix — M. Y. 



Agonostoma nasutum U. M. — 



Heros parma — M. 



spilums — M. Y. 



aureus — M. Y. 



motaguensis — M. — 



microphthalmus — M. — 



oblongus — M. — 



angulifer — — Y. 



salvini U. — — 



irregularis U. — — 



godmanni — — Y. 



Alius assimilis — — Y. 



melanopus — - M. — 



Amiurus meridionalis ....U. — — 



Pimelodus godmanui U. M. — 



motaguensis — M. — 



salviui U. — — 



polycaidus U. — — 



Tetragonopterm panamensis . — — Y. 



brevimauus U. — Y. 



Chalcinopsis deutcx U. M. Y. 



Fundulus labialis U. — Y. 



Belonesox beHzaiuis Honduras, Belize. 



PoeciUa cbisoyensis U. — — 



Xiphophorus helleri U. — • — 



Sclerognathu.s meridioiiaUs U. — — 



Carapus fasciatus — M. — 



C. Lake Peten. — The fish-fauna of tliis limited district is so peculiarly developed, 

 that we cannot hesitate to describe it as a separate province. 



Heros margaritifer. 



melauurus. 



urophthalmus. 



affinis. 



friedrichsthalii. 



salvini (iu common with 



vince B). 

 intermedius. 



Petenia spleudida. 

 Pimelodus petenensis. 

 Tetragonopterus petenensis. 

 Belonesox (in common witli pi'oviuce 



B). 

 Poecilia petenensis. 

 Mollienesia petenensis. 

 Chffitoessus petenensis. 



