6 DIDELPHYS. 



Island of Cozumel Opossum. 



Type locality. Cozumel Island, Yucatan. 



Geogr. Distr. Known only from the type locality, 



14. Didelphys mesamericana Oken. 



Didelphis! mesamericana Oken, Lehrb. der Zool., ii, 1816, p. 1152. 

 Didelphis! calif arnica Bennett, Proc. Zool. Soc, 1833, p. 40, 

 Didelphys californica Elliot, Syn. N. Am. Mamm., F. C. M. Pub., 



II, 1901, p. 3. Zool. Ser. 

 Didelphys mesamericana Elliot, Mamm. Middle Amer. &W. Indies, 



F. C. M. Pub., IV, Pt. I, p. 15, fig. 5, pi. II. Zool. Ser. 

 LiNNEAN Opossum. 



Type locality. "Northwestern Mexico, adjacent to California." 

 Geogr. Distr. Oklahoma Territory, through Mexico generally into 



Guatemala. 



a. Didelphys mesamericana texensis (Allen). 



Didelphis! marsupialis texensis Allen, Bull. Am. Mus. Nat. Hist. 



N. Y., 1901, p. 172. 

 Didelphys marsupialis texensis Elliot, Syn. N. Am. Mamm., 



F. C. M. Pub., II, 1901, Suppl., p. 519. Zool. Ser. 

 Didelphis! mesamericana texensis Allen, Bull. Am. Mus. Nat. Hist. 



N. Y., 1902, p. 256. 

 Didelphys mesamericana texensis Elliot, Mamm. Middle Amer. & 

 W. Indies, F. C. M. Pub., iv, Pt. i, 1904, p. 16. Zool. Ser. 

 Texas Opossum. 



Type locality. Brownsville, Cameron County, Texas. 

 Geogr. Distr. Coast region of Texas from Neuces Bay southward, 

 and the lower Rio Grande Valley as far at least as Del Rio, Val Verde 

 County, sporadically northward to San Antonio ; Matamoros, State of 

 Tamaulipas, Mexico. 



b. Didelphys mesamericana tabascensis (Allen). 



Didelphis! marsupialis tabascensis Allen, Bull. Am. Mus. Nat. 



Hist. N. Y., 1901, p. 173. 

 Didelphis! mesamericana tabascensis Allen, Bull. Am. Mus. Nat. 



Hist. N. Y., 1902, p. 257. 

 Didelphys mesamericana tabascensis Elliot, Mamm. Middle Amer. 



& W. Indies, F. C. M. Pub., iv, Pt. i, 1904, p. 16. Zool. Ser. 

 Tabasco Opossum. 



Type locality. Teapa, State of Tabasco, Mexico. 

 Geogr. Distr. State of Vera Cruz to that of Tabasco, and across 

 State of Chiapas, Mexico, to northern Guatemala. 



