4 CALUROMYS. METACHIRUS. 



Genus 3. Caluroinys. 



Caluromys Allen, Bull. Am. Mus. Nat. Hist. N. Y., 1900, p. 189. 

 Type Didelphis! philander Linnaeus. 



9. Caluromys alstoni Allen. 



Caluromys alstoni Allen, Bull. Am. Mus. Nat. Hist. N. Y., 1900, 

 p. 189. Elliot, Mamm. Middle Amer. & W. Indies, F. C. M. 

 Pub., IV, Pt. I, 1904, p. 9, pi. I. Zool. Ser. 



Didelphys cinereus Alston, Biol. Centr. Amer., Mamm., i, 1880, 

 p. 199, pi. XXI. (nee Temm.) 

 Alston's Opossum. 



Type locality. Tres Rios, Costa Rica. 



Geogr. Distr. Costa Rica, Central America. 



10. Caluromys derbianus (Waterhouse) . 



Didelphys derbianus Waterh., Jard. Nat. Libr., Mamm., xi, 1841, 



p. 97. 

 Caluromys derbianus Elliot, Mamm. Middle Amer, & W. Indies, 



F. C. M. Pub., IV, Pt. I, 1904, p. 9, fig. III. Zool. Ser. 

 Earl of Derby's Opossum. 

 Type locality. Unknown. 

 Geogr. Distr. Nicaragua in Central America to Peru in South 



America. 



Caluromys laniger pallidus (Thomas) . 



Philander laniger pallidus Thomas, Ann. Mag. Nat. Hist., 7th Ser., 



IV, 1899, p. 286. 

 Caluromys laniger pallidus Allen, Bull. Am. Mus. Nat. Hist, N, Y., 

 1900, p. 189. Elliot, Mamm. Middle Amer. & W. Indies, 

 F. C. M, Pub., IV, Pt. I, 1904, p. 10, Zool. Ser, 

 Pale Woolly Opossum. 



Type locality. Bogava, Chiriqui, Panama. Altitude, about 750 

 feet. 



Geogr. Distr. Southeastern Central America. 



Genus 4. Metachirus. 



Metachirus Burm., Syst, Uebers. Thier. Bras., i, 1854, p. 135, 

 Type Didelphys nudicaudata E. Geoff roy. 



11. Metachirus nudicaudatus (E, Geoffroy), 



Didelphys nudicaudata E. Geoff., Cat, Mus. Paris, 1803, p. 42. 

 Didelphis! myosurus Temm., Mon. Mamm., i, 1827, p. 38, 



