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Show 82 ZOOLOGY OF 'J'IIE VOYAGE OF THE BEAGLE. Negro and Bahia Blanca. Otherwise we must believe that the same animal utters different kinds of noises, in different districts; a fact which I should feel much inc] ined to doubt. "Azara"' says that the Tucutuco may be ' found every where; provided thnt th soil be pure sand, and the situation not subject to be overflowed. As these condil ions arc fulfilled only in certain spots, their warrens arc far separated from each other, even sometimes more than twenty-five leagues, without it being possible to conceive how these animals have been able to pass from one place to another.' The difficulty, I think, is much overstated; for, as I have said, the burrows of the Tucutuco are sometimes made in very damp places, near lakes; so that they certainly might pass over almost any kind of country. But if the C. JJmziliensis and C. JJfagellanicus be consillered as one species, as some Freuclt authors arc inclined to do, then the difficulty will be increased in a very remarkable manner, as we shall be obliged to transport the Tucutuco over wide plains of shingle, and across many great rivers, and an arm ofthe sea."-D. POEPHAGOMVS ATER. l'ocphagomys ater, F. Cn1lim·, Annalcs des Sciences Naturelle , 2d series, Zoologi c, tom. J.p. 321. Juno, 183,t. Chile, (September.) " This animal is generally scarce, but in certain districts, I believe, of an alpiue character, it is abundant. It excavates very extensive superficial burrows, no doubt, for the purpose of feeding on the roots of plants, as in the case of the Ctenomys Braziliensis, the habits of which have just been des'cribed. Horses passing over districts frequented by these animals, sink fetlock deep through the turf. I procured my specimen from Valparaiso, where the country-people called it 'Cururo.' "-D. OcTODON CuliHNGn. Octodon Cumingii, Bennett, rroc. of Committee of Science and Correspondence of the Zoo!. Soc. for 1832, p. 46. ----- Tmnsactions of the Zoological Society of London, vol. ii. p. 81. r1. l 6. Dendrobius Dc~us, ltfcyen. Actn, Acadomioo, c. 1. c. Na.turre Curiosorum, xvi. p. GJO. rt. H, 1833. Valparaiso, Chile, (October.) • Aza.ra. Voyage dans I" Amerique Meridionale, vol. i. p. 324. IAMMALTA. Tl Tfh ese little anima• ls are d' 83 cxcee mgl ley requcnt by ltu ndrcds the lJeda ~ ll umerous in the central parts of Cl 'I rows close together, leatlin . . oe-Iows and thickets, where tl 11 e. manner; and a•·e . g o~c mto another. The f, d . 1 ~Y make burall run together to v,e? cles~nlCtJve to fields of youn ~o:e. by day_ m a fearless I I watds theu· burrows in tl g n' when dtsturbcd th <. o w l~n feeding outside a covert Wh te sa~e manner that rabbits in En' l ey J?ore hke squirrels than rats; a~d th en I:unmng they carry their tails hiO'~ and hke the former animals A a· ey often remain seated on tl . h o up, the winter but d . ccor Ing to Molina* the I leu aunches, author . h: ho not become dormant. TlJe 0 /d ay. up a store of food for ' . says t at the Indians i . co on JS the "degu" f 1 11lCse animals appear to b . , n ~ast tunes used to eat them with I o ~ 1at tmtler the influence of 1 e V~Iy .subJect to be piebald and a]b' . muc.l rehsh. c omestiCat10n. ' mos, as 1f part] y GE us-ABROCOMA.t Dentes primore '* . . s ~ acttlz, eradicati ant·· ~ l Ul,.axzltce superim·is iu areas d ' zce ceves: motares utriuque f snbtequale ll' dtVz'sis z· . uas trausversa/es 00 /' . S, z lS . ; p zcts ut1·iusque Iaten's vi. ,. . . . p ~cas vztreas acute iudentatus '' es partes divisis pticis vit , . ~. c~que JH qfundts; zlhs rnaudibulce h, Ferio . . . sa ) ·u ' J ezs lttS znterue t !I' ns m '·z ce cuspidem fiurrente . t . . ' seme e.r;terne indentatis, w·ea J . . • Artus subcequales. o , cce eJ zs acute tn'uugnlaribus. '11 mw pA ntipedes 4-dacl!1J li' extento brevissim · t .. edes postici 5-dactyli. rlio· 't . o, zn ermedtts Lougissimis etfere a:quulib~ts r/io·it ,· .· ' · o z 0 mterno breviss · T r. · o z secundt lato el lamett . . . . . zmo. vrwues breves et debiles itlo Oapnt' mediocre r.t ,. ·b a~ t' omuzbus setts 1·igidis obtectis. ' . ' U1Z US mao"JUS b. . Cauda breviuscula o ' mem lanacets; oczdis mediocribus. v, . el/us perlongmn, et mot/e. The genus Ab. . rl p 10coma JS evidently all'ed 1 01t, oepltao·onws and c~t I on t le one hand to the genera Octo Th e £o ur genera.7 j' ust menefn onzyds, and on t h e ot 1l er to the family 0/tinclu'//idre - would be well to ~nite tl IOn~ possess so many characters in common, that i~ the group. lem, an the name Octodontidce may be used to designate The Octo f t ·d l fi on t m ap})ear to b tl co ce do to the 11-r .1 .~..uuru, ce. ear Je same relations to E cJ .t t·m ys, as the Arlli- • Compendio de 1 n· .,. 'A(J a. Jst. Nat. dol Reyno de Chile, vel. i. p. 343. pos, soft; Kol-"1> ha.ir. |