mmBammmmmm 



'I 



CASTOltlDiB— BUCASTOB-BUCASTOU TOUTUS. 



4m 



Taulr II.— £(<(o/*p«»iiicii<czami/iaio/CA8TOii kibku ror. c\NADENfiis— Cuntiuiied. 



0966 



(•) 

 (*) 

 lags 



I3G0 



(•) 



33Tt 

 •418 



UI4 

 HtO 

 1003 

 :IT» 

 18037 



134 



icn 

 rwa 



rwi 



7393 

 3678 

 S9«4 



Lcealtly. 



KoDua 



Port Uftya, Kans 



Fort Cobb, lud. Ter 



do 



UoDTi^r, Colo 



Fort Chftrtbouruo, Tox ... 



Matamui-aB, Uex 



<lo 



KloOruide, Tex 



Franklin Coiuity, MIh . . 



UiulMippI 



Oxfonl County, Me 



do 



do 



Magalloway River, Ue... 



do 



TellowBlouo Itivor, N. T. 

 Saint Lawranoe Co., N. Y 



Lake Superior :.... 



... .do 



do 



do 



Skagit River 



River Elbe, Germany — 



Wbon 

 oullucted. 



Oct 8,- 



Frum whom re. 

 evlvt'd. 



Dr. F. V. Ilaydrn 

 Rocky Mt. Eiped 



Dr. E.^alnlor 



...do 



Dr. E.Swift 



Lieut D. N. Conob. 



...do 



MaJ. W. II. Emory. 

 RL. C.Wallra... 



Mr. Kpeuan 



J.G.Rlob 



.. do 



...do 



J.O.RIeh 



...do 



n. A.Wood 



Dr. HoDKb 



L. H.Morgan 



...do 



..do 



..do 



Prince Maximilian. 



Collcoted by— 



Dr. F. V. llaydon 



•r. A. Allin 



Dr. E. Palmer. . . . 

 ...do 



Dr. E. Swift 



Dr. L. Berlandler 



..do 



J.H.Clark 



B.L.C.Wallea... 



Mr. Keenan 



J.O.RIeb 



..do 



... do 



J.O.RIeh 



...do. 



H. A.Wuod 



Dr. Hough 



Un. Morgan .... 



...do 



.. do 



...do 



a 

 I 



§ 



s 



Skull. 

 ...do. 

 Skin. 

 ..do. 

 Skull. 

 Skin. 

 Skull. 

 ...do. 

 ..do. 

 ...do. 

 ...do. 

 ...do. 

 Skin. 

 ...do. 

 ...do. 

 ...do. 

 Skeleton. 

 Skull. 

 ... do. 



do. 



do. 



...do. 

 ...do. I 

 ...del 



* In the Muaenm of Comparative ZuJilogy, Cambridge, Maaa. ' Variety fiur. 



Genus EUCASTOR Leidy. 

 EUCASTOR TORTUS Leidy. 



Ca»tor (EtuMlor) torlut Lkidy, Proo. Acnd, Nat. Soi. Pbils., 1658, %<. 



CmIot tortm Lkii>v, Jonrn. Acad. Nnt. Sei. Pbil., 2d ser., v, 1360, 341, 405, pi. zxvi, tiga. 21, 33 ; U. 8. 

 Oeol. Siirv. of Wyouiing, 1871, 36.3. 



Tliis species was fir"t described by Dr. Leidy in 1858, from remains 



tliscovered by Dr. Hayden in the loose sands of the Niobrara River. These 



remains consist of the greater portion of an upper jaw, containing portions of 



the incisors and the three anterior molars on each side, and were redescribed 



and figured by him in 1869. This fragment indicates an animal smaller even 



than the common Marmot (Arctomys mofiax), and hence of mvich less than 



luilf the bulk of the existing Beaver. The porticm of the jaw described by 



Dr. Leidy " consists ofthe under parts of both maxillary and intermaxillary 



bones, wliich together are the diminished counterpart in form of the oorrc- 



siKinding iwrts of the recent Beaver. The incisor teeth likewise have tlie 

 20 M 



