NORTH AMERICAN RECENT MAMMALS. 439 



*Proechimys semispinosus burrus (Bangs). 



1901. Proechimys hurras Bangs, Ajner. Nat., vol. 35, p. 640. 



August, 1901. 

 1920. Proechimys semispinosus burrus Goldman, Smiths. Misc. 



Coll., vol. 69, No. 5, p. 120. April 24, 1920. 

 Type Locality. — San Miguel Island, Panama. 



*Proecliimys semispinosus centralis (Thomas). 



1889. Echinomys semispinosus True, Proc. U. S. Nat. Mus.. 



vol. 11 (1888), p. 467. September 3. 1889. Not of Tomes, 



1860. 

 1896. Ecliinomys centralis Thomas, Ann. and Mag. Nat. Hist.^ 



ser. 6, vol. 18, p. 312. October, 1896. 

 1920. Proechimys semispinosus centralis Goldman, Smiths. Misc 



Coll., vol. 69, No. 5, p. 120. April 24, 1920. 

 Type Locality. — San Emilio, north end of Lake Nicaragua* 



Nicaragua. 



♦Proechimys semispinosus panamensis (Thomas). 



1900. Proechimys centralis panamensis Thomas, Ann. and Mag- 



Nat. Hist., ser. 7, vol. 5, p. 220. February, 1900. 

 1900. Proechimys centralis chirquinus Thomas, Ann. and Mag. 



Nat. Hist., ser. 7, vol. 5, p. 220. February, 1900. (Bogava, 



Chiriqui, Panama. Altitude, 800 feet.) 

 1920. Proechimys semispinosus panamensis Goldman, Smiths. 



Misc. Coll., vol. 69, No. 5, p. 120. April 24, 1920. 

 Type Locality. — City of Panama, Panama. 



t*Pro8chiin73 setn ispinosus rubellus (Hollister). 



1914. Proechimys rubellus Hollister, Proc. Biol. Soc. Wash- 

 ington, vol. 27, p. 57. March 20, 1914. 



1920. Proechimys semispinosus rubellus GolDxMAN, Smiths. Misc. 

 Coll., vol. 69, No. 5, p. 120. April 24, 1920. 



Type Locality. — Angostura Va lley, Costa Rica. 



Genus ECHIMYS F. Cuvier. 



1809. Echimys F. Cuvier, Nouv. Bull. Soc. Philomath., Paris, 

 No. 24, p. 394. September, 1809. Type, by subsequent 

 selection (Fleming, Philos. of ZooL, vol. 2, p. 191, May or 

 June, 1822) , Myoxus chrysurus Zimmermann. 



1811. Loncheres Illiger, Prodr. Syst. Mamm. et Avium., p. 90. 

 Type, by monotypy, Myoxus chysurus Zimmermann. 



For use of the name Echimys in place of Loncheres see Thomas, Ann. and 

 Mag. Nat. Hist., ser. 8, vol. 18, p. 71, July, 1916. (According to Allen, 

 Proc. Biol. Soc. Washington, vol. 29, p. 206, September 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, Smiths. Inst., Publ. 

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



