88 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 



".Rhipidomys sumichrasti (Saussure). 



1861. Hesperomys sumichrasti SAUSSURE, Revue et magasin 



de zoologie, 2d ser., xii, p. 107. 

 1885. Hesperomys sumichrasti TRUE, Proc. U. S. nat. mus., 



vii (1884), p. 598. 1885. 

 1897. [Khipidomys] sumichrasti TROUESSART, Catal. mamm., 



pt. in, p. 519. 

 TYPE LOCALITY. Eastern slope of mountains in State of Vera 



Cruz, Mexico. 



Rhipidomys decolorus True. 



1894. Sitomys {Rhipidomys} decolorus TRUE, Proc. U. S. 



nat. mus., xvi, p. 689. February 5, 1894. 

 1897. \Iihipidomy s~\ decolorus TROUESSART, Catal. mamm., 



pt. in, p. 519. 

 TYPE LOCALITY. Rio de las Piedras, Honduras. 



Genus TYLOMYS Peters. 



1866. Tylomys PETERS, Monatsber. k. preuss. Akad. Wissensch. 

 Berlin, p. 404. Type. Hesperomys ( Tylomys) nudicaudus 

 PETERS. 



* k Tylomys midicaudus (Peters). 



1866. Hesperomys ( Tylomys) midicaudus PETERS, Monats- 

 ber. k. preuss. Akad. Wissensch. Berlin, p. 404, pi. 1, figs. 

 1-4. 



1885. Hesperomys nudicaudus TRUE, Proc. U. S. nat. mus., 

 vii (1884), p. 598. 1885. 



1897. \_Tylomy 8\ nudicaudus TROUESSART, Catal. mamin., pt. 

 in, p. 520. 



TYPE LOCALITY. Guatemala. 



* Tylomys panamensis (Gray). 



1873. Neomys panamensis GRAY, Ann. and mag. nat. hist., 



4th ser., xii, p. 417. 



1885. Hesperomys panamensis TRUE, Proc. U. S. nat. mus., 

 vn (1884), p. 598. 1885. 



