178 BULLETIN 79, UNITED STATES NATIONAL MUSEUM. 



*Zygodontomys chrysomelas (Allen). 



1897. Oryzomys chrysomelas Allen, Bull. Amcr. Mus. Nat. Hist., 



vol. 9, p. 37. March 11, 1897. 

 1902. Zygodontomys chrysomelas Bangs, Bull. Mus. Comp. Zool., 



vol. 39, p. 37. April, 1902. 

 Type Locality. — Suerre, Costa Rica. 



*Zygodontomys seorsus Bangs. 



1901. Zygodontomys seorsus Bangs, Amer. Nat., vol. 35, p. 642. 

 August, 1901. 



Type Locality. — San Miguel Island, Panama. 



Genus SIGMODONTOMYS Allen. 



1897. Sigmodontomys Allen, Bull. Amer. Mus. Nat. Hist., vol. 9, 

 p. 38. March 11, 1897. Type, Sigmodontomys aZ/ari Allen. 



Sigmodontomys alfari Allen. 



1897. Sigmodontomys aJjari Allen, Bull. Amer. Mus. Nat. Hist., 



vol. 9, p. 39. March 11, 1897. 

 Type Locality. — Jimenez, Costa Rica. Altitude, 700 feet. 



Genus MEGALOMYS Trouessart.^ 



1881. Megalomys Trouessart, Le Naturaliste, vol. 1, p. 357. 

 February 1, 1881. Type, Mus inlorides Pallas. 



1902. Megalomys Allen, Bull. Amer. Mus. Nat. Hist., vol. 16, 

 p. 21. February 1, 1902. 



According to Major (Ann. and Mag. Nat. Hist., ser. 7, vol. 7, p. 205, Febru- 

 ary, 1901), this genus is not distinguishable from Oryzomys. 



Megalomys desmarestii (Fischer). 



1829. M[us] desmarestii Fischer, Synopsis MammaHum, p. 316. 

 1885. Hesperomys pilorides True, Proc. U. S. Nat. Mus., vol. 7 



(1884), p. 598. 1885. 

 1902. Megalomys desmaresti Allen, Bull. Amer. Mus. Nat. 



Hist., vol. 16, p. 21. February 1, 1902. 

 Type Locality. — Island of Martinique, West Indies. 



According to Major (Ann. and Mag. Nat. Hist., ser. 7, vol. 7, p. 205, Febru- 

 ary, 1901), the proper name for this species is Oryzomys pilaris (Zimmermann.) 



Megalomys lucias (Major). 



1901. Oryzomys Incise Major, Ann. and Mag. Nat. Hist., ser. 7, 



vol. 7, p. 206. February, 1901. 

 Type Locality. — Island of Santa Lucia, West Indies. 



1 On account of the existence of the earlier name Mcgamys (L.\ueillard, 18-4S) applied to another genus, 

 Megalomys has been replaced by Moschomys Thouessakt (Aim. and Mag. Nat. Uist., ser. 7, vol. 11, p. 

 388, April, 1903, not of Billberg, 1828) and Moschophoromys Eluot (Field Columb. Mus., publ. 90, zool. 

 se.-., vol. 3, p. 270, March 8, 1904). This is not in accordance with the provisions of the International Code. 

 (Art. 36, with accompanying recommendation.) 



