() PROCEEDINGS : BOSTON SOCIETY NATURAL HISTORY. 
1900. Cdluromys derbianus Allen, Bull. Amer. mus. nat. hist., 
XIII, p. 189. October 12, 1900. 
Type locality. — Unknown. 
Caluromys laniger pallidus (Thomas). 
1899. Philander laniger pallidus Thomas, Ann. and mag. .nat. 
hist., 7th ser., iv, p. 286. October, 1899. 
1900. Caluromys laniger pallidus Allen, Bull. Amer. mus. 
nat. hist., xiii, p. 189. October 12, 1900. 
Type locality. — Bogava, Chiriqui, Panama. Altitude, 250 
meters. 
Genus METACHIRUS Burmeister. 
1854. 3Ietachirus Burmeistee, Thiere Brasil., i, p. 135. Based 
(by elimination) on the species myosurus Temminck (= nudicau- 
data E. Geoffroy) and quica Temminck. 
*Metachirus fuscogriseus Allen. 
1885. Didelphys quica True, Proc. U. S. nat. mus., vii 
(1884), p. 587. 1885. (Not of Temminck.) 
1900. Metachirus fuscogriseus Allen, Bull. Amer. mus. nat. 
hist. XIII, p. 194. October 23, 1900. 
Type locality. — Central America. 
Metachirus nudicaudatus (E. Geoffroy). 
1803. Didelphys nudicaudata E. Geoffroy, “ Cat. mus. p. 42.” 
1888. Didelphys nudicaudata Thomas, Catal. marsup. and 
monotr. Brit, mus., p. 332. 
1900. M\etachirus\ nudicaudatus Allen, Bull. Am. mus. 
nat. hist., XIII, p. 197. October 23, 1900. 
Type locality. — Cayenne, French Guiana (see Allen, Bull. 
Amer. mus. nat. hist., xiii, p. 197, October 23, 1900). 
