1913] Grinnell-Swarth: Birds <nx] Mammals of San Jacinto 381 



Table (2) showing relative numbers of boreal birds represented on 

 the different mountain masses of southern California. Note the correla- 

 tion of numbers of types with size of the detached area of Boreal (and 

 Transition) zone in each ease (see profile, pi. 7). 



Dendragapus o. sierrae x 



Otus f. flammeolus x 



Xenopicus albolarvatus, subsp. x 



Sphyrapicus v. daggetti x 



Sphyrapicus thyroideus x 



Chordeiles v. hesperis x 



Stellula calliope x 



Nuttallornis borealis x 



Empidonax wrighti x 



Cyanoeitta s. frontalis x 



Nueifraga columbiana x 



Carpodacus cassini x 



Loxia c. bendirei x 



Leueostiete t. dawsoni x 



Spinus p. pinus x 



Zonotrichia 1. leucophrys x 



. I unco o. thurberi x 



Melospiza 1. lincolni x 



I'asserella i. stephensi x 



Oreospiza chlorura x 



Dendroica a. auduboni x 



Certhia f. zelotes x 



Sitta canadensis x 



Sitta pygmaea, subsp. x 



Penthestes gambeli, subsp. x 



Regulus s. olivaceus x 



Regulus c. cineraceus x 



Myadestes townsendi x 



Hylocichla g. sequoiensis 3 



Planesticus m. propinquus x 



Sialia currucoides 3 



Total number of species 31 1< 17 28 22 11 



