ull. U. S. Nat. Mus., 62:35, January 28.

_Marginal records_ (Nelson, 1909:242).--Guerrero: El Lim['o]n. Oaxaca:
Llano Grande, thence westward along Pacific Coast.

=Sylvilagus graysoni= (J. A. Allen)

Tres Marias Cottontail

1877. _Lepus graysoni_ J. A. Allen, Monogr. N. Amer. Rodentia, p.
347, August, type from Tres Marias Islands, Jalisco; probably
Mar['i]a Madre Island. (See Nelson, N. Amer. Fauna, 14:16, April 29,
1899.)

1904. _Sylvilagus_ (_Sylvilagus_) _graysoni_, Lyon, Smiths. Misc.
Coll., 45:336, June 15.

_Marginal records_ (Nelson, 1909:245): Mar['i]a Madre Island; Mar['i]a
Magdalena Island.

Total length, 480; tail, 51; hind foot, 99; ear from notch (dry), 57.
This insular species is closely related to _Sylvilagus cunicularius_ of
the adjacent mainland but has notably shorter ears and more reddish on
the upper parts, sides and legs; the skull is slenderer, especially in
the rostral region. The posterior extensions of the supraorbital process
are united to the braincase throughout most of their length as in
_Sylvilagus palustris_. The species seems to have a narrow vertical
range, occurring from sea level up to only 200 feet.

Genus LEPUS Linnaeus--Hares and Jack Rabbits

Revised by Nelson, N. Amer. Fauna, 29:59-158, August 31, 1909.
Concerning Shamel's (Proc. Biol. Soc. Washington, 55:25, May 12,
1942) proposed changes of names for several species, see Hall, Univ.
Kansas Publ., Mus. Nat. Hist., 5:45, October 1, 1951.

1758. _Lepus_ Linnaeus, Systema Naturae, ed. 10, 1:57. Type _Lepus
timidus_ Linnaeus.

1895. _Macrotolagus_ Mearns, Science, n. s., 1:698, June 21. Type,
_Lepus alleni_ Mearns. (See Mearns, Proc. U. S. Nat. Mus., 18:552,
June 24, 1896.)

1904. _Poecilolagus_ Lyon, Smiths. Misc. Coll., 45:395, June 15.
Type, _Lepus americanus_ Erxleben.

1904. _Lagos_ Palmer. N. Amer. Fauna, 23:361, January 23. Type,
_Lepus arcticus_ Ross. _Lagos_ J. Brooks, a catalogue of the
anatomical and zoological museum, pt. 1, p. 54, July, 1828,
appears to be a _nomen nudum_.

1911. _Boreolepus_ Barrett-Hamilton, History of the British
Mammalia, pt. 9, p. 160, November 17. Type, _Lepus groenlandicus_
Rhoads. (For status see Sutton and Hamilton, Mem. Carnegie Mus.,
12 (pt. 2, sec. 1):78, August 4, 1932; also A. H. Howell, Jour.
Mamm., 17:331, November 1