648 U. S. NATIONAL MUSEUM BULLETIN 205 



1811. Loncheres Illiger, Prodromus systematis Mammalium et Avium . . . , 

 p. 90. (Type by monotypy, Myoxus chrysurus Zimmermann.) 



Echimys armatus (I. Geoff roy-Saint-Hilaire) * 



1838. Nelomys armatus I. Geoffroy-Saint-Hilaire, Ann. Sci. Nat., Paris, ser. 2, 



vol. 10, p. 125. 

 1884. Loncheres armatus True, Proc. U. S. Nat. Mus., vol. 7 (App., Circ. 29), 



p. 550, Nov. 29, 1884. 

 1904. [Echimys] armatus Trouessart, Catalogus Mammalium . . . , Suppl., 



fasc. 2, p. 503. 

 Type Locality. — Cayenne, French Guiana. Range. — Recorded from Mar- 

 tinique, Lesser Antilles. 



Genus DIPLOMYS Thomas 



1916. Diplomys Thomas, Ann. Mag. Nat. Hist., ser. 8, vol. 18, p. 240, August 

 1916. (Type, Loncheres caniceps Giinther.) 



Diplomys labilis (Bangs)* 



1901. Loncheres labilis Bangs, Amer. Nat., vol. 35, p. 638, August 1901. 



1916. D[iplomys] labilis Thomas, Ann. Mag. Nat. Hist., ser. 8, vol. 18, p. 296, 

 September 1916. 



Type Locality. — Isla San Miguel, Archipielago de las Perlas, Golfo de Panama, 

 Panama. Range. — Known from Isla San Miguel only. 



Diplomys darlingi (Goldman) f* 



1912. Isothrix darlingi Goldman, Smithsonian Misc. Coll., vol. 60, No. 2, 

 p. 12, Sept. 20, 1912. 



1916. D[iplomys] darlingi Thomas, Ann. Mag. Nat. Hist., ser. 8, vol. 18, p. 296, 

 September 1916. 



Type Locality. — Marraganti, near Real de Santa Maria, on Rio Tuyra, Darien, 

 eastern Panama. Range. — -Recorded also from Tapalisa in Darien (Anthony, 

 Bull. Amer. Mus. Nat. Hist., vol. 35, p. 370, June 9, 1916) and from Ancon, 

 Canal Zone, Panama (Goldman, Smithsonian Misc. Coll., vol. 69, No. 5, p. 125, 

 Apr. 24, 1920) . 



Genus HETEROPSOMYS Anthony 



1916. Heteropsomys Anthony, Ann. New York Acad. Sci., vol. 27, p. 202 

 Aug. 9, 1916. (Type, Heteropsomys insulans Anthony.) 



1916. Neopsomys Miller, Smithsonian Misc. Coll., vol. 16, No. 12, p. 2, Dec. 

 7, 1916. (Accidental renaming of Heteropsomys.) 



Heteropsomys insulans Anthony* 



1916. Heteropsomys insulans Anthony, Ann. New York Acad. Sci., vol. 27, 

 p. 202, Aug. 9, 1916. 



vol. 29, p. 206, Sept. 22, 1916, the correct name for this genus is Loncheres; but the type of 

 Echimys was not fixed on the species spinosus by subsequent selection as defined in Opinion 6 

 of the International Commission of Zoological Nomenclature, Smithsonian Inst. Spec. Publ. 

 No. 1938, pp. 7-9, July 1910. 



