. Sixth annual report of the United States geological survey of the Territories, embracing portions of Montana, Idaho, Wyoming, and Utah : being a report of progress of the explorations for the year 1872. Hab.—Upper Missouri; whole Pacific coast. Family 13.— callotis, {f) Wag-ler, (jackass or mule rabbit i^ No. Catalogue-number. Sex. Date. Locality. Skull*. 5 12436 — June 21,1872 Ogden, Utah. Hah.—^orth-ern Mexico, tliroagh Southern Texas, and west throughISTew Mexico to the Eocky Mountains, north to the Yellowstone; FortBoise, Oregon, (?) Southern Sonora. (?) GEOLOGICAL SURVEY
. Sixth annual report of the United States geological survey of the Territories, embracing portions of Montana, Idaho, Wyoming, and Utah : being a report of progress of the explorations for the year 1872. Hab.—Upper Missouri; whole Pacific coast. Family 13.— callotis, {f) Wag-ler, (jackass or mule rabbit i^ No. Catalogue-number. Sex. Date. Locality. Skull*. 5 12436 — June 21,1872 Ogden, Utah. Hah.—^orth-ern Mexico, tliroagh Southern Texas, and west throughISTew Mexico to the Eocky Mountains, north to the Yellowstone; FortBoise, Oregon, (?) Southern Sonora. (?) GEOLOGICAL SURVEY OF THE TERRITORIES. 6G7 Lepus bainUi, Hayden, (Bairds rabbit:) No. Smitlisoniau cata-logue-uumber. Sex. Date. Locality. Skull. • Skin. 32 44 f4/ 50 1241112412124131241412415 11097110981109911100 iiior $$$$ JUY. Aug. 29,1872Sept. 7,1872Sept. 11,1872Sept. 15,1878Sept. 17,1872 Lower Geyser Basin, Lake, Lake, River, Lake, Wyo. Hab.—Pine regions about the head-waters of the Wind and Yellow-stone Eivers. I was fortunate enough to secure five specimens of this rare and re-markable rabbit. Heretofore but one specimen of this species has been Fisr. 57-. LEPUS BAIRDU, HAVDEN. brought before the scientific world, and it (ISTo. 4263) is now on exhibi-tion in the Smithsonian Institution. It was collected in the Wind EiverMountains by Dr. Hayden in the month of June, 1860, and was describedby him in the American JSTatnralist, (vol. lii, Ko. 3, May, 1S69.) Un-fortunately the sex of this specimen was not determined. One very curious fact relating to Lepus hairdii is that all the maleshave teats and take part in suckling the young. I say all the males,because four out of the five specimens procured were adult males, andall had large teats full of milk, and the hair around the nipple was wetand stuck to it, showing that they were then nursing their young. 668 GEOLOGICAL SURVEY OF THE TERRITORIES. As we found no females, we thought this might
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