MARSUPIALIA: DIDELPHIIDAE 9 



Genus METACHIRUS Burmeister (brown-masked opossums) 

 1854. Metachirus Burmeister, Systematische Uebersicht der Thiere Brasiliens, 

 . . . , pt. 1, p. 135. (Type, Didelphys myosurus Temminck = D. nudi- 

 caudata E\ Geoff roy-Saint-Hilaire.) 

 Metachirus nudicaudatus dentaneus Goldmanf* 



1912. Metachirus nudicaudatus dentaneus Goldman, Smithsonian Misc. Coll., 

 vol. 56, No. 36, p. 2, Feb. 19, 1912. 



Type Locality. — Gatun, Canal Zone, Panama. Range. — From Panama (Gold- 

 man, Smithsonian Misc. Coll., vol. 69, No. 5, p. 53, Apr. 26, 1920) north to 

 Chontales, Nicaragua (Goodwin, Bull. Amer. Mus. Nat. Hist., vol. 87, p. 284, 

 Dec. 31, 1946) . 



Genus CALUROMYS * J. A. Allen (woolly opossums) 

 1856. Philander Burmeister, Erlauterungen zur Fauna Brasiliens . . . , p. 74. 

 (Type, Philander cayopollin Burmeister = Didelphis philander Linnaeus.) 

 (Homonym of Philander Tiedemann, 1808.) 

 1900. Caluromys J. A. Allen, Bull. Amer. Mus. Nat. Hist., vol. 13, p. 189, Oct. 



12, 1900. (Type, Didelphis philander Linnaeus.) 

 1916. Micoureus Matschie, Sitzb. Ges. naturf. Freunde Berlin, 1916, No. 8 

 (October) , pp. 259, 269, Dec. 15, 1916; op. cit., 1917, No. 4 (April) , p. 281, 

 Sept. 10, 1917. (Type, Didelphis laniger Desmarest= Didelphis lanata 

 Olfers. Not Micoureus Lesson, 1842 ; type, by subsequent selection, Thomas, 

 1888, Didelphis cinerea Temminck.) 

 1920. Mallodelphys Thomas, Ann. Mag. Nat. Hist., ser. 9, vol. 5, p. 195, Febru- 

 ary 1920. (New name for Micoureus Matschie, 1916, not of Lesson, 1842.) 



Subgenus MALLODELPHYS B Thomas 



Caluromys derbianus derbianus (Waterhouse)* 



1841. Didelphys derbianus Waterhouse, in The naturalist's library (Edit. 

 Jardine), vol. 30 (Mammalia, vol. 11, Marsupials), p. 97. 



1913. Ph[ilander] l[aniger] derbianus Thomas, Ann. Mag. Nat. Hist., ser. 8, 

 vol. 12, p. 358, October 1913. 



Type Locality. — Cauca Valley, Colombia. Range. — Northward to Panama 

 (Goldman, Smithsonian Misc. Coll., vol. 69, No. 5, p. 54, Apr. 24, 1920) . 



Caluromys derbianus pallidus (Thomas) * 



1899. Philander laniger pallidus Thomas, Ann. Mag. Nat. Hist., ser. 7, vol. 4, 

 p. 286, October 1899. 



1946. Caluromys derbianus pallidus Goodwin, Bull. Amer. Mus. Nat. Hist., 

 vol. 87, p. 285, Dec. 31, 1946. 



Type Locality. — Bogava [Bugaba], foothills of Volcan de Chiriqui, Chiriqui, 

 Panama. Range. — Arid Pacific Coast region in western Panama and north to 

 central Costa Rica (Goodwin, loc. cit.). Recorded also from Puntarenas on 

 Golfo de Nicoya, Costa Rica (Hall and Kelson, Univ. Kansas Publ. Mus. Nat. 

 Hist., vol. 5, No. 25, p. 325, Dec. 5, 1952). 



4 For use of Caluromys J. A. Allen in place of Philander Brisson, Regnum animate . . . , 

 ed. 2 p. 207, 1762 (type, by tautonomy, Philander Bnsson=Dide!phis Philander Linnaeus), 

 see Hershkovitz, Proc. BioL Soc. Washington, vol. 62, p. 12, Mar. 17, 1949; and Hopwood, 

 Proc. Zool. Soc. London, vol. 117, pts. 2-3, p. 533, Oct. 30, 1947. 



*For diagnosis of Caluromys derbianus section of woolly opossums in subgenus Mallodel- 

 phys, see Gilmore, Amer. Journ. Trop. Med., vol. 21, No. 2, p. 318, March 1941. 



