OCT., 1899.] BOREAL SPECIES OF SHASTA AND SIERRA-CASCADES. 



73 



zones, 4G percent; of species restricted to tlie Hudsonian and Alpine 

 zones, 44 percent. 



For evidence of another kind — that based on the <rb,seiice from Sliasta 

 of species which occnr in tlie Sierra or the Cascades or both — see pages 

 79-82. 



Following are the tables on which the foregoing generalizations are 

 based : 



(1) BOREAL SPECIES COMMON TO SHASTA AND THE SIERRA-CASCADE 



SYSTEM. 



(Species followed by the letter T raiif^e down into or lhioiiL;li tho Traii.sitioii zone.) 



(a) MAMM,*,LS. 



Callospermopliilns clirysodeirus l'. 



Canis lestes. 



Erethizon epixantbus T. ? 



Eutamias amci'mis T. 



Eutamias senex T. 



Evotoniys mazauia.' 



Felis oregoneiisis T. 



Lepiis klainatheiisis T. ? 



Lutreola visoii energuiiienos T. 



Microtna inordax T. 



Mitstela cauriua. 



Mustela pennanti. 



Myotis liicif'ugits longicrus T. 



Myotis ynmaiiensis satnr.itns 

 Neotoma cinerea T. 

 Nenrotrichns gibbsi major T. 

 Ocliotona schistif^eiis. 

 Odocoileus colniiibianiis T. 

 Peroiuysciis gauibcli T. 

 Pbenacomys oropliilus. 

 Putorius arizoiiensis. 

 Sorex vagraus amci'iins T. 

 Sarex (Neosorex) navigator. 

 Taxidea taxns T. 

 UrsHS aiiiericaiuis T. 

 Viilpt's macrourus T. 



(h) BIKI)^■ 



AocipittT atrica]iillii8 striatnhis. 

 Accipiter velox. 

 Aqiiila chrysai'tos T. 

 CarpodacHS cas.sini. 

 Ceopblo-ns pileatus abieticola T. 

 Certbia familiaris occidentalis T. 

 Ciuclus niexicanus T. ? 

 Coccotbraustcs vespertinus iiiontanns. 

 Colai^tes cafer T. 

 Contopus borealis T. 

 Dendragapus obscurus fnliginosns T. 

 Dendroica auduboni T. 

 Dendroica occidental is. 

 Dryol>ates villosus bj'loscopus T. 

 Enipidonax difficilis T. 

 Enipidonax bammoudi T. 

 Enipidonax wrigbti T. 

 Geotblypis tolmiei T. 

 Hfliiiiutbopbila celata Intescens T. 

 Heluiiiitbopbila rubricapilla guttur- 

 alis T. 



Hylocicbla aonalascbkn' .ludiiboni T, 



Melospiza lincolni T. 



Mcntla uiigratoria propiiuina T. 



Myadestes townseiidi. 



Nucifraga coluinbiaua. 



Oreortyx pictns plniiiiferns T. 



Parus ganibeli. 



Picoides arcticus. 



Piranga ludoviciana T. 



Regnlus calendubi. 



Rcguliis satrapa olivaceus. 



Salpinctes obsob'tiis T. 



Selaspborns rnfus T. 



Sialia arctica. 



Sitta canadensis. 



Sitta carolinensis aculeata T. 



Sphyrapicus tbyroideus. 



Spinus pinus. 



Stellula calliope T. 



Wilsonia pnsiila pileolata T. ? 



Zonotricbia leucopbrys. 



' Evotomys mazama, a common Cascade species, was obtained by us on Shasta and 

 Lassen, and doubtless occurs iu tbe Sierra, fartber south. 

 21753— No. 16 10 



