GORGO LAS re eras kta cslete. akedergaet pita akars 
Steel ERE DS: ss's-cuta ere tele Boh alsa Soe 
eaeesetceeeeeeacneseeeeeenweeeeeeeaaseeeeaeea 
Live SLAPS a seteval aces salen wile Biatateserd stelaueleein arevetn ere arta citer eta peter ese ed eae etch okt 
Ear CN ea he erarte tal ones ute: cleaisbetaes'c? tel Gea Tetevadd ete rene a otgtatenel ene elo atele-ercuionae Mion mad 
ES CHUA USS Seats crig: scone, greet wees gee yore ate a tglane oe eletore: € enavcbata onde aber eos lare tan sieve heats 
Age DECC VIIA Ea Oleg aera eryteteie sre week altuna. Sato obs MAW oad de ea terdl olde and Ces 
MAG Seats WP hao arete tenn Doterataiate tavelter eh onal faked Aes vors 
PGMA LCS Aq. sees atehe boast piavesdeena tceva de eran eneanadts oh ite Amie cole rate ate omer tale hate, 
Sex DE CS LIMITA ETO ies. Ses, wre. st brad tox pherk otavata con, Wee “asoce ocd tate, gleeete te. erere osteo ke loate 
In CA jit LARILE a: yates ohare Peta tecatowere a sia ieee au ere gictaate wield tar gea te are eee aeaer ee ela Bele 
BY OSDECUS. ts! oie sic toons ol levee 
Appendix l., 
Appendix 2. 
Appendix 3. 
Type Locality and Range of the Seven RaceS.....cccecses 
Some Foods of the Mountain Beaver...c.cccccccccecvcccuee 
Some Parasites of the Mountain Beaver.cccsccccccccecec 
Bib Et Gora pity ci: Stace. Os ae etavetesete cge-eromte a eceitel e Salae arebapectara Maun tela taale bat oterebeers eters 
Frontispiece. 
Figure 
Figure 
Figure 
Figure 
Figure 
Figure 
Figure 
1, 
2 
os 
4. 
De 
6. 
7. 
FIGURES 
The Mountain beaveris..sc-v< so .vcls eee Ss elses 66. 666s ecele eo 
Relationships of the primitive aplodontiids......... 
Distribution of the Seven FaceS..cccoeevverecscscoce 
Views of the skull of the mountain beaver....ccscces 
Manner of feeding of the mountain beaver..ecceccsses 
Mountain beaver habitat in clear-cut area... cacccecs 
Mountain beaver clearing tunnel of earth and debris. 
Mountain beaver in a burrow entrance... ccccsccessecs 
iV 
