_Marginal records._--Sonora: near San Bernardo on Río Mayo on Sonora side of Sonora-Chihuahua boundary (Burt and Hooper, 1941:7): _Alamos_ (Nelson, 1909:119); Guirocoba (Burt, 1938:68). Nayarit: Acaponeta (Nelson, 1909:119). Sinaloa (Nelson, 1909:119): Esquinapa; _Rosario_; Culiacán. Sonora: "near" Navajoa (Burt, 1938:68). LEPUS ALLENI TIBURONENSIS Townsend. 1912. _Lepus alleni tiburonensis_ Townsend, Bull. Amer. Mus. Nat. Hist., 31:120, June 14, type from Tiburon Island, Gulf of California, Sonora. Known from Tiburon Island only. =Lepus europaeus= European Hare Total length, 640-700; tail, 70-100; hind foot, 130-150; ear from notch (dry), 79-100; weight, 3000 to 5000 grams. Upper parts tawny, mixed with blackish hairs on back; underparts white including underside of tail; upper side of tail and terminal patch at distal end of outside of ears black; upper side of feet tawny like sides (not white or whitish). This is an introduced species. LEPUS EUROPAEUS EUROPAEUS Pallas. 1778. _Lepus europaeus_ Pallas, Nov. Spec. Quadr. Glir. Ord., p. 30. Type locality, Burgundy, France. (Introduced and established in Ontario and parts of the northern United States; slowly spreading in southern Ontario north of Lake Erie (St. Thomas and Woodstock), west and north of Lake Ontario (Toronto) to Goodrich on east side of Lake Huron. See Anderson, Canadian Field-Naturalist, 37:75-76, April, 1923; Anderson, Nat. Mus. Canada Bull., 102:100, January 24, 1947; Burt, Mammals of Michigan, p. 247, 1946.) LEPUS EUROPAEUS HYBRIDUS Desmarest. 1822. _Lepus hybridus_ Desmarest, Encyclopedie methodique (Zoologie) Mammalogie, pt. 1, p. 349 (Name based on "Russac" of Pallas, Nov. Spec. Quadr. Glir. Ord., p. 5, 1778), type locality central Russia. 1912. _Lepus europaeus hybridus_, Miller, Cat. Mamm., western Europe, Publ., British Mus. (Nat. Hist.), p. 508, November 23, 1912. _Range._--Introduced and established in New York and Connecticut (see Goodwin, Connecticut Geol. and Nat. Hist. Survey, Bull. 53:159-162, 1935). [Illustration: FIGS. 49-51. Dorsal views of skulls of hares. All × 1.] FIG. 49. _Lepus americanus tahoensis_, ½ mi. S Tahoe Tavern, Lake Tahoe, Placer County, California. No. 37522 MVZ, ♂. FIG. 50. _Lepus alleni alleni_, Santa Rita Mountains, 30 mi. S Tucson, Pima County, Arizona. No. 8621 KU, ♂. FIG. 51. _Lepus arcticus groenlandicus_, Cape Alexander, Greenland. No. 114850 USNM, ♂. [Illustration: FIGS. 52-54. Dorsal views of skulls of hares. All × 1.] FIG. 52. _Lepus townsendii townsendii_, north end Ruby Valley, east base Ruby Mountains, Elko County, Nevada. No. 4686, coll. of Ralph Ellis, ♀. FIG. 53. _Lepus callotis_, 3½ mi. S Tecolotlán, Jalisco. No. 31842 KU, ♀.