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Show .l\IAMMALIA. 4 7 moustaches are rather short and slender, and of a brownish colour. Thumb nail small and rounded. In. Lines. Length from nose to root of tail 3 9 of tail Length of tarsus 4 lk of car from nose to ear l 0 In. Lines. I 01 0 4k Habitat, Maldonado, La Plata, (June.) This species is slightly larger than the common mouse; the head is rather larger in proportion; the ears are rather smaller and more distinctly clothed with hair; the tail and tarsi are much longer in proportion. Its bright yellow colouring and proportions distinguish it from any of the species described in this work. Of this animal I do not possess the skull, nor of the teeth do I possess more than the first and second molars of the upper jaw, and the second and last of the lower jaw. These are figured in Plate 34, figs. 5. a, and 5. b. Mus MAGELLANicus. PLATE XIV. 1\fus Magollanicus, Bennett, Proceedings of tho Zoological Society of London for December 1835, p. 191. M. suprtt fitscus, sub tits cinerescenti-albus, pallide jlavo lavatus; aurilms mediocribus pilis fitscis ohsitis; cauda corpus caputque cequante; tarsis longis, pitis sol'(lide albis obsitis. DESCRIPTION.-Fur very long and moderately soft, general colour deep brown; the hairs of the ordinary fur are gray, tipped with yellowish brown; the longer hairs are black; the sides of the body are yellowish; the under parts are gray-white with a faint yellowish tint, each hair being gray tipped with yellowish white. The ears are rather small, well clothed with hairs; those on the inner side are blackish tipped with yellow, and on the outer side they are blackish on the fore part and dusky on the hinder part. The fore feet are of moderate size, the thumb nail is short and rounded; the tarsi are rather long·; both fore and hinder feet are of a brownish colom, and covered abov with dirty gray hairs. The tail rather exceeds the head and body in length; it is brown above and dirty white beneath. The hairs of the moustaches are numerous and long, of a brownish colour at the apex and black at the base. |