MILLER AND REHN : NORTH AMERICAN MAMMALS. 
89 
1897. [ Tylomys'] panameyisis Teouessart, Catal. raamm., 
pt. Ill, p. 520. , 
Type locality. — Panama. 
Tylomys watsoni Thomas. 
1899. Tylomys watsoni Thomas, Ann. and mag. nat. hist., 
7th ser., iv, p. 278. October, 1899. 
Type locality. — Bogava, Chiriqui, N. W. Panama. Alti¬ 
tude, 800 feet. 
Genus HOLOCHILUS Brandt. 
1835. Holochilus Brandt, Mem. de I’acad. imper. sci. St. 
Petersbourg, 6th ser., i, p. 428. Type. — Mns {Holochilus) 
leucoyaster Brandt. 
^Holochilus pilorides (Pallas). 
1778. 3fy(s pilorides Pallas, Nov. spec, quadr. glir. ord., p. 
91. 
1885. Hesperomys pilorides True, Proc. U. S. nat. mus., vii 
(1884), p. 598.* 1885. 
1897. \^Holochilus] jydorides Teouessart, Catal. mamm., pt. 
III, p. 520. 
_ 
Type locality. — Island of Martinique, Lesser Antilles. 
Genus SIGMODON Say and Ord. 
1825. Sifpnodon Saa' and Ord, Journ. acad. nat. sci. Phila., iv, 
pt. II, p. 352. Type. — jSif/modon hispyidus Saa^ and Ord. 
Sigmodon borucae Allen. 
1897. Sigmodon borucae Allen, Bull. Amer. mus. nat. hist., 
IX, p. 40. March 11, 1897. 
Type locality. — Boruca, Costa Rica. 
