XLVIII LIST OF SPECIES. 
"Page. 
25. SPERMOPHILUS, Cuv. 304 
16.—Spermophilus macrourus, Bennet.—West Coast of Mexico. (Not belonging to the 
Wratedd Bkearties!) Geses eae ec cteec teseeveuuee se vcanvs ck. onoeemetestteeran csceerascuheetae 327 
27. ARCTOMYS, Schreb. 338 
17.—Arctomys pruinosus, Gmelin.—Hoary Marmot; Whistler.—Hudson’s Bay to 
Northwest coastiofwA meric. 22. assc van tees « eacanaes~osaectenee ude nevis ane e 345 
18.—Arctomys lewisii, Aud. & Bach.—Lewis’ Marmot.—Columbia River?..........sss00« 347 
32. THOMOMYS, Max. 388 
19.—Thomomys talpoides, Giebel.—Mole Gopher.—Hudson’s Bay.........ssssssesereeeernes 403 
33. DIPODOMYS, Gray. 406 
20.—Dipodomys wagneri, Leconte.—South Carolina(!) (Very doubtful).........seseee 415 
21.—Dipodomys heermannii, Leconte.—Sierra Nevada, California.........ses000+ wolecnesbae 415 
37. REITHRODON, Waterh. 447 
92.—Reithrodon carolinensis. —South Carolina .........0....c0sssssesscreseecesscencceseeneseceens 452 
38. HESPEROMYS, Waterh. 453 
23.—Hesperomys campestris, Lec.—New Jersey. (Uncertain)........sssssessesseeessereens 485 
. 41, ARVICOLA, Lac. 509 
24.—Arvicola albo-rufescens, Emmons.— Massachusetts .............cececeeececseeeeeneececeees 549 
25.—Arvicola borealis, Rich.—Great Bear Lake................066 rodeeosetes Root ode vsiencctestees 549 
26.—Arvicola dekayi, Aud, &. Bach.—New York ..........cccccsssssssseseeceesceeeeseseseceseee 549 
27.—Arvicola drummondii, Aud. & Bach.—British Rocky Mountains ..............00000005 550 
28.—Arvicola hirsutus, Dekay.—New York. ...........csccscsecseceeseceeeeceess i oendeaesserasteet 550 
29.—Arvicola nasuta, Aud. & Bach.—Massachusetts..,..........csecsscecsscsecsecsstsesssendece 550 
30.—Arvicola oneida, Dekay.—New... York sis cssucayfvidetspeasear oecdive da vgevecdenaieeaaveeeaean 551 
31.—Arvicola richardsonii, Dekay.—British Rocky Mountains..............cccsssseceneeeeenes 551 
32.—Arvicola rubricatus, Rich.—Behring’s Straits ...............csscssseseenseeesenseeesensenes 551 | 
33.—Arvicola texiana, Aud. & Bach.—Texas ......s0..cccccccecsssesssscsnssreceeeeeseseessessenes 552 
34.—Arvicola xanthognathus, Leach.—Hudson’s Bay............5. secseeccenseeeeneeeeneeeeens 552 
Norre.—Of the above Arvicolae, those most likely to prove additional species are Nos. 25, 27, 31, 32, and 34. 
45. LEPUS. Lin. 573 
35.—Lepus texianus, Aud. & Bach.—Texas Rabbit.—Texas and Arkansas.............045 617 
36.—Lepus nuttalii, Bach.—Least Hare.—Columbia River. (Very-doubtful) acess 617 
