_Marginal records._--Baja California (Nelson, 1909:156): Southern part of the Peninsula. Santa Clara Mts., southward around range of _L. c. martirensis_ to and down east coast; La Paz; Cape St. Lucas; San Jorgé; 20 mi. W San Ignacio. =Lepus insularis= Bryant Black Jack Rabbit 1891. _Lepus insularis_ Bryant, Proc. California Acad. Sci., 3(ser. 2):92, April 23, type from Espiritu Santo Island, Gulf of California, Baja California. Known from Espiritu Santo Island only. 1895. _Lepus edwardsi_ St. Loup, Bull. Mus. Hist. Nat., Paris, 1:5, type from Espiritu Santo Island, Gulf of California, Baja California. Total length, 574; tail, 96; hind foot, 121; ear from notch (dry), 105. This insular species, clearly a close relative of _Lepus californicus_ of the adjacent peninsula of Baja California, is mainly glossy black on the upper parts but grizzled and suffused on sides of back and body, and in some specimens on head, with dark buffy or reddish brown; underparts dark cinnamon buffy or dusky brown; ears and sides of head grayish dusky; jugals heavier than in _Lepus californicus_ of the adjacent peninsula of Baja California. =Lepus callotis= Wagler White-sided Jack Rabbit 1830. _Lepus callotis_ Wagler, Nat. Syst. der Amphibien, p. 23, type from southern end of Mexican Tableland. 1830. _Lepus mexicanus_ Lichtenstein, Abhandl. k. Akad. Wiss., Berlin., p. 101, type from México (southern end of Mexican Tableland). 1833. _Lepus nigracaudatus_ Bennett, Proc. Zool. Soc. London, p. 41, type from "that part of California which adjoins to Mexico" (probably southwestern part of Mexican Tableland). _Marginal records_ (Nelson, 1909:124).--Durango: Durango (city of). San Luis Potosí: Arenal. Hidalgo: Tulancingo. Oaxaca: Oaxaca (city of); Tlapancingo. Jalisco: Atenquiqui; Reyes. Total length, 560; tail, 71; length of hind foot, 133; ear from notch (dry), 117. Upper parts dark, slightly pinkish, buff heavily washed with black; backs of ears mainly white without terminal patch of black; flanks white; rump iron gray. [Illustration: FIG. 48. Distribution of the White-sided Jack Rabbits. Guide to kinds: 1. _Lepus callotis_ 2. _Lepus flavigularis_ 3. _Lepus gaillardi gaillardi_ 4. _Lepus gaillardi battyi_ 5. _Lepus alleni alleni_ 6. _Lepus alleni palitans_ 7. _Lepus alleni tiburonensis_ ] =Lepus flavigularis= Wagner Tehuantepec Jack Rabbit 1844. _Lepus callotis_ var [gamma] _flavigularis_ Wagner, Schreber's Säugthiere, Suppl., 4:106, type from México (probably near Tehuantepec City, Oaxaca). 1909. _Lepus flavigularis_, Nelson, N. Amer. Fauna, 29:125, August 31. _Marginal records._--Oaxaca (Nelson, 1909:126): Santa Efigenia; San Mateo del Mar; Huilotepec.