(Chambira?) (Plate 3). happy enough to investigate the name) in the years locality in North-Eastern-Peru on the Marañon-River, visà-vis.

Transcription

1 SOUTH-AMERICAN MAMMALS. 223 NOTE XXVIII. On three rre South-Americn Mmmls ii y Dr. F.A. Jentink My (Plte 3). Some weeks go I procured smll collection of Mmmls nd Birds collected by Mr. J. H. (I hve not been hppy enough to investigte the nme) in the yers 1880 nd The specimens lbeled 1880 re from Nut; those with the lbel 1881 re from Smiri. Nut is loclity in North-Estern-Peru on the Mrñon-River, visà-vis the mouth of the Ucyli-River. Smiri is nme quite new to me nd not on the mps, but I think tht this loclity is to be foundin the neighborhood of Nut nd is perhps the sme s Chmbir on the mps: nd if this supposition is right then it is loclity in Ecudor, on the River of the sme nme, brnch of the Mrñon. Tht it is not without interest to know the exct sitution of the ltter loclity will be cler ifi sy tht from Smiri just (Chmbir?) re two Mmmls in the bove quoted collection, which belong to two of the most beutiful nd t the sme time of the rrest mong the South-Americn species of Mmmls. Notes from the Leyden Museum, Vol. IX.

2 n hs 224 SOUTII-AMEUICAN MAMMALS Dctylomys typus Is. Geoffroy. The type of this rre nd splendid species is in the Pris-Museum: its exct loclity is unknown. The second recorded specimen, mle, from Ntterer's voyge, is in the Vienn-Museum nd hs been shot on the bnks of the Rio-Negro. Deville records tht»les differents sujets rpportes pr l'expedition (de Cstelnu et Deville) viennent de l Mission de Srycu, riviere de l'ucyle, Pmp del Scrmento." Two specimens re in the British-Museum, from the Rio-Npo (P. Z. S. L. 1876, p. 743). Our specimen dult mle been collected in North- Peru or Ecudor by Mr. J. H., 7 August The certin ptri of this species thus is North-West-Brzil, Ecudor nd Northern-Peru. Our specimen presents the following mesurements: m.m. Length of body from tip of nose to root of til. 328»» til 406»» hiry bsl portion of til 90»» hind foot 59»» fore foot 32»» skull 78»» nsl bones 26 Width of skull 37 Length of upper molr series 20»» lower»» 21 Distnce between incisor nd first molr (upper jw) 17»»»»»» (lower jw) 9 As there is in the two British-Museum specimens no skull nd s Wgner is silent on this point in the description of Ntterer's specimen, I think tht up to this time the only known skulls of this species re those in the Pris-Museum nd the skull in the Leyden Museum. There is very bdly drwn figure of the type-specimen in the»mgsin de Zoologie, 1840, pi. 20." The skull hs been tolerbly well figured in the»nouvelles Aunles du Notes from the J_ieyclen Museum, "Vol. IX.

3 SOOTH-AMERICAN MAMMALS. 225 Museum d'histoire nturelle, 1832, pi. 19, figs 5 et 6"; the molr-series severl times hs been figured; the only good figures however of these prts re to be found in the»revue et Mgsin de Zoologie, 1852, pi. 16, figs. 1 nd l (Deville)." As to the bony prts M. Deville correctly observed tht the fore feet hve five digits s well s the hind feet nd tht the fifth digit of the fore feet is very smll so tht M. Is. Geoffroy hs overlooked it in describing the feet fter the very bdly preserved type-specimen. Echimys brevicud Günther. A mle-specimen, lbeled Smiri, 19 December 1881 nd collected by Mr. J. H., grees exctly with Wterhouse's description of n Echimys- specimen (Mmmli, T. II, p. 498, foot-note). Dr. Giinther (P. Z. S. L. 1876, p. 750) ssures tht Wterhouse's specimen is tilless individuum of E. brevicud Giinther, nd I thus give to my specimen the ltter nme. The only difference in Giiuther's figures of the skull nd the skull of my specimen is tht in the ltter the nsl bones re much more produced nd longer. The Smiri-specimeu moreover is lrger in ll its dimensions. Another specimen, young (only three molrs present) femle from the sme collection is from Nut, 12 September I think it to be young of this species, with which it grees in form nd distribution of colors (f. i. hirs of underprts re pure white to the root nd seprted by well-mrked line from the drk color of the sides of the body): there re however no hrsh hirs. This species thus is to be found in Southern-Ecudor?, Peru nd Bolivi. Didelphys lniger Desmrest. This species is nerly s rre in collections s Dctylomys typus Is. Geoffroy. Notes from the Leyden Museum, Vol. IX.

4 from I ift in is from 226 SOUTII-AMEIiICAN MAMMALS. The type of Azr's Micouré lineux is from Prguy, Czp; nother specimen mle the neighborhood of Sinte Mrie de l Foi hs been presented to d'azr. This species lso ws represented in Rengger's collections from Prguy, Vill Ric. Mr. Oldfield Thoms informs me tht there re severl specimens in the British-Museum, from Pnm (Chefo), Columbi (Medellin), Ecudor nd Peruvin Amzons (Chmicuros). Nttercr's specimen in the Vienn-Museum is from Gifr, Southern-Brzil; it ws the first specimen of this species in ny Europen-Museum. Another specimen mle from Ntterer's voyge lest Didelphys ochropus Ntterer is mere vriety of D. lniger, s 1 suppose is from Brr do Rio-Negro. Mr. Huet writes me tht there is single specimen femle the Pris-Museum, from J. Verreux in 1854 nd indirjue comme vennt d'austrliel In the Leyden Museum is stuffed specimen mle Dcmerr,- British Guin (Frnk, 1877). Our other specimen femle from Ecudor or Northern Peru, 4 August 1881, collected by Mr. J. H. The bove given loclities show tht this species hs very wide re of geogrphicl distribution, viz.: from Pnm to Prguy nd from Peru to British Guin. The species hs been figured under the nme of Didelphys ornt Tschudi believe with Mr. Oldfield Thoms tht the specimen described by Tschudi in his Fun Perun under this new nme belongs to our species but this figure cnnot be clled very correct, especilly the colors do not gree with the description. Didelphys derbin Wterhouse belongs perhps too to our species, but I never sw the figure in the Nturlist's Librry (Mrsupili) Vol. XI, PI. 2 (Wterhouse). Alston's figure of Didelphys derbin (Biologi centrli-mericn, pi. XXII) is tken from n originl sketch from the life by Mr. Smit, nd lets no doubt tht the femle nd young specimens, living in My 1877 in the Zoologicl Society's Grdens, belonged to the true Didelphys lniger. Both our specimens show Notes irom the Leyden Museum, "Vol. IX.

5 SOUTII-AMEHICAN MAMMALS. 227 tlie drk spots on the nked prt of the til, s figured in Alston's hove mentioned book; in Tschudi's figure of his D. ornt these spots re wnting. The descriptions given by Tschudi nd Wgner re sufficiently correct. The skull nowhere hs been figured or described. The figures of the skull of our Smiri-specimen will dischrge me of description. I now wish to compre it with skulls of other Didelphys-species in our collection. All the teeth re present nd it shows ll chrcteristics of fullgrown skull. There is no sgittl crest like in skulls of dult specimens of the other Didelphys-species of the sme or of lrger size. The postorbitl process of frontl hone is much more developed thn in ny other Didelphys- species t my disposl, nd in no species the skull is so short in proportion to its brodness: the skulls of Didelphys philnder figured by Temminck in his»mmmlogie, T. I, pi. 6" re lso very short, they hve been removed from young specimens s the dentition indictes. The first premolr in upper nd lower jw is very smll. The second upper premolr is very stout nd much stronger thn the third upper premolr, the ltter reching bout three qurter of the length of the second upper premolr, menwhile in the other Videlphys-skulls the second nd third re upper premolrs bout of the sme size or sometimes the third is higher thn the second. The second lower premolr ttins bout three qurter of the size of the third lower molr nd thus pproches more wht I find in D. opossum, D. cncrivor nd D. zre, lthough in these species in lower degree, menwhile in the other species the second nd third lower premolr re nerly of the sme size; in D. tristrit the third lower premolr is somewht higher thn the second. I think tht closer exmintion of lrger series of Didelphys- skulls thn I hve t my disposl, will bring us to divide the Opossum- fmily in some gener nd to se- prte D. lniger in peculir genus, perhps together with D. philnder: for the skull nd dentition of D. l- Notes from the Leyden Museum, Vol. IX.

6 228 SOUTH-AMERICAN MAMMALS. niger hs in severl prts striking resemblnce with the skull nd dentition of D. philnder figured under the of Philnder nme cyopollin in Burineister's x.erl:iuterungen Fun zur Brsiliens, 1856, PI. XI, figs. 5, 5 nd 5l>"; if Philnder dichur Burmeister is good species (I cnnot judge bout this becuse I never sw specimen like it) then it my enter too in the sme division. Notes from the Leyden Museum, Vol. IX.

7 N.L.M Plte 3. A.J.J. Wendel d nt. del. et lith. P.W.M. Trp impr. Didelphys Desmrest. lniger