212 BULLETIN 19 9, XWITED STATES NATIONAL MUSEUM 



Genus CAIMAN Spix 



Caiman Spix, Animalia nova sine species lacertarum . . . Brasiliam . . ., 1825, p. 3. 

 Perosuchus Cope, Proc. Acad. Nat. Sci. Philadelphia, 1868, p. 203 (genotype, 

 Perosuchus fuscus Cope) . 



Genotype. — Caiman Jissipes Spix (=CrocodiIus latirostris Daudin). 

 Species. — Two species, one with three subspecies, are recognized; 

 one occurs in Mexico. 



Range. — The Isthmus of Tehuantepec to Argentina. 



CAIMAN CPOCODILUS FUSCUS (Cope) 



Perosuchus fuscus Cope, Proc. Acad. Nat. Sci. Philadelphia, 1868, p. 203. 

 Caiman crocodilus fuscus, Mertens, Senckenbergiana, vol. 26, 1943, p. 275. 

 All[igator] (Jacare) Cfiiaparius Bocourt, Ann. Sci. Nat., ser. 6, vol. 3, No. 12, 



1876, pp. 1-2 (type probably in Mus. Hist. Nat. Paris; type locality, Tonald, 



Chiapas) . 

 All[igator] Ohiapasius Bocourt, Journ. Zool., vol. 5, 1876, pp. 400-401 (equivalent 



to preceding). 



Type. — Unknown. 



Type locality. — Rio Magdalena, Colombia. 



Range. — Oaxaca and perhaps Michoacan to Colombia. Reported 

 from the states of Oaxaca: Tapanatepec, Agua Fria; and Chiapas: 

 Tonala, Belen, Colonia Soconusco. A record from the Balsas 

 Valley in Michoacan (by Gadow) may be correct, but one from 

 Yucatan (Tozzer) is, we believe, certainly incorrect. 



SPECIES INQUIRENDAE 



A few species whose natural ranges remain unknown have been 

 included in their appropriate systematic place in the preceding pages. 

 A few others, described from "Mexico," have since been found to occur 

 elsewhere. Among these are the following: 



HERPETOCHALCIS HETEROPUS Boetlger 



Herpetochalcis heteropus Boettger, Bericht. Offenb. Ver. Nat., vols. 22-23, 1883, 

 pp. 150-151. 



The type locality was stated to be perhaps California, or Mexico, 

 or Central America. The name is apparently a synonym of Chalcides 

 heteropus Lichtenstein, Nomencl. Mus. Zool. Berol., 1856, p. 17 

 (=Bachia heteropa) described from La Guaira. Venezuela, and re- 

 stricted in range to that country. 



LEIOSAURUS BELLI DmnfirU and Bibron 



Leiosaurus belli 'DvM^mii and Bibron, Erp^tologie g^n^rale, vol. 4, 1837, p. 242. 



The type locality was stated to be "Mexico," but the species (and 

 genus) has since been discovered to be restricted to Argentina. 



