alifornia: Bodie
(Severaid, 1950:2); 5000 ft., 3 mi. S Ravendale (Orr, 1940:194).
Oregon: Silver Lake (Bailey, 1936:110, fig. 17, 206518 USBS);
Fremont (_ibid._, 205005 USBS); Redmond (_ibid._, 242302 USBS); 10
mi. N Baker (Dice, 1926:27). Idaho: type locality; Junction (Davis,
1939:366).

Total length, 250-290; tail, 20-30; hind foot, 65-72; ear from notch
(dry), 36-48; weight, 6 [MALE] 409(375-435), 9 [FEMALE] 398(246-458)
grams. Upper parts pinkish to blackish or dark grayish depending on
amount of wear. The pigmy rabbit lives in burrows, mostly dug by
itself, preferably where tall sagebrush grows densely. This species
feeds extensively on sagebrush, at least in winter. Six young seem
to be the rule and they are born any time from late in May until
early in August.

[Illustration: FIG. 7. Distribution of _Sylvilagus idahoensis_.]

Subgenus SYLVILAGUS Gray--Cottontails and Allies

1867. _Sylvilagus_ Gray, Ann. and Mag. Nat. Hist., 20 (ser. 3):221.
Type, _Lepus sylvaticus_ Bachman [= _Lepus nuttalli mallurus_
Thomas].

1867. _Tapeti_ Gray, Ann. and Mag. Nat. Hist., 20 (ser. 3):224,
September. Type _Lepus brasiliensis_ Linnaeus.

1897. _Microlagus_ Trouessart, Catalogus Mammalium ..., p. 660.
Type, _Lepus cinerascens_ J. A. Allen.

1897. _Limnolagus_ Mearns, Science, n. s., 5:393, March 5. Type
_Lepus aquaticus_ Bachman.

1950. _Paludilagus_ Hershkovitz, Proc. U. S. Nat. Mus., 100:333, May
26. Type _Lepus palustris_ Bachman.

Characters of subgeneric worth, in contrast to those of the subgenus
_Brachylagus_, are: First premolar, in upper jaw and in lower jaw, with
more than one fold in the enamel; infolded enamel, which divides each
molar tooth into two parts, crenate.

The many nominal species of the subgenus _Sylvilagus_ belong to no more
than 12 and perhaps to only ten full species. The now more abundant
specimens than were available a half century ago reveal also that there
are less trenchant differences between some of the species than were
supposed to exist when the five names for genera or subgenera listed
immediately above were proposed. Some species can be placed in each of
two subgenera with almost equal propriety. If used, four of the five
subgeneric names mentioned above would contain only one species each. It
seems that no useful purpose is served by attempting to fit the several
specie