246 MONOGKAPUS OF NORTO AMERICAN EODENTIA. 



Mi/odes, or Arvicola at large, it will be better understood by simply laying the 

 different skulls side by side, and looking at the teeth with a pocket-lens. 



Externally, although funiculus shares the "lemming" shape of Myodes, 

 it is instantly distinguished by the absence of external ears, the shortness 

 and dense furring of the feet, the obsolete pollex with rudimentary nail, and 

 the prodigious length of the two middle fore claws, whose size is often more 

 than doubled by the singular growth already mentioned. As to the absence 

 of ears, there is indeed a rim or border around the opening, but it cannot be 

 called an auricle. 



We have in America but one species of Cuniculus as far as is known; 

 it is identical with that of Northern Asia. Of the relationships of the sup- 

 posed second species, C. lagurus, we can say nothing, having seen no speci- 

 mens; but, as already intimated, we believe its validity to be open to question. 



CUNICULUS TORQUATUS, (Pall.) Coues. 



Mus hudsonius, Pallas, N. Sp. Quad. Gliriuvu, 1778, 208, pi. xxvi, figs. A, B, C. (quotes Forster, Phil. Trans. 



Ixii, 1772, 379).— Gmklin, Syst. Nat. i, 1788, 137. 

 Lemmus hudsonius, Samne, Suppl. Parry, App. 1824, 185. — Sabine, Frankliu's Jonrn. App. 1825, 661. — 



Harlan, Fu. Amer. 1825, 546. 

 Arvicola hudsonia, Eiciiakdson, App. Parry's 2d Voy. 308. 

 Arvicola (Georychus) hudsonius, Richardson, F. B.-A. i, 1829, 132. 

 Myodes hudsonius, Wagner, Suppl. Schreber, iii, 1843, 604.— Middendorff, Bull. Acad. Imp. St.-P<Ster. iii, 



xix.— Wiegmauu's Arcbiv, 1845, Bd. ii, 34. — Dall, Alaska aud its Resources, 1870, 577. 

 Georychus hudsonius, Aud. & Bach., Q. N. A. 1853, iii, 81, pi. cxix. 

 Cuniculus hudsonius, Coues, Proc. Acad. Nat. Sci. Phila. 1874, 196. 



Mus torquatus, Pallas, N. Sp. Quad. Glirium, 1778, 77 and 206, pi. xi, B.— Gm., Syst. Nat. i, 1788, 136. 

 Myodes torquatus, Keyserling & Blasics, Wirbelth. Europ. 1840, pp. vii and 32. — Middendorff, Sibir. 



Eeise, ii, pt. ii, 1853, 87, pi. iv-vii and x. — Balrd, M. N. A. 1857, 558. — Blackm. & Alston., 



P. Z. S. 1874, 469. 

 Misothermus torquatus, Hensel, Zeits. Deutsch. Geol. Ges. vii, 1855, 492, pi. xxv, figs. 12, 13. 

 Mus lenensis, Pallas, N. Sp. Quad. Glirium, 1778, 195. 



Mus granlandicus, Tkaill, Scoresby's Greenland, 1823, 416. — Richardson, App. Parry's 2d Voy. 304. 

 Arvicola (Georychus) granlandicus, Eichaudson, F. B.-A. i, 1829, 134. 

 Georychus grosnlandicus, Aud. & Bach., Q. N. A. 1854, iii, 315. 

 Cuniculus grocnlandicus, Wagler, Isis, 1832, 1220. 

 Myodes granlandicus, Wagner, Suppl. Schreber, iii, 1843, 606.— Gray, P. Z. S. xvi, 1848, 43, aud Eae'a 



Narrative, 1850. — Dall, Alaska and its Eesources, 1870,577. 

 Lemmus ungulatus, Baer, Baer and Helmersen, Beitriige, iv, 1841, 283. 

 Hudson's Itat aud Hare-tailed Bat, Pennant, Arct. Zool. i, 1785, 132, 133; Quad, ii, 201. 

 Hare-tailed Mouse, Hear.ve, Journ. 387. 

 Hudson's Lay Lemming, AUCT. 

 Wapiskooseesiclc ("White Bear-Mouse"), Cree Indians.— Lunaguy ("White Mouse"), Chippewayans. — 



Auingnack (" White Mouse"), Esquimaux. (Label of No. 7755.) 



Diagnosis — C. ezauriculatus, pottice obsoleto, unguibus digitorum mantis 

 3 ,n — 4* 1 maximis, bimucronatis, quasi-duplicatis ; pedibus hirsutissimis; caudd 

 pedibus breviore ; veslitu astivali suj>ra castaneo nigro et griseo ant luleo varie- 



