1916] Grinnell: Analysis of Trunin Fauna 403 



BIRDS 



Lophortyx califomica californica. 



Astragalinus tristis salicamans (also in humid coast belt). 



Astragalitius psaltria Itesperophilus. 



Chondestes grammacus strigatus (occurs also in the Great Basin). 



Pipilo maculatus faldnellus. 



Pipilo crissalis carolae. 



Thryomanes beioicki drymoecus. 



Baeolopltus inomatus inornatus. 



Chamaea fasciata henshatn. 



Table 7. Sonoran species of the Trinity region which belong to variable 

 groups, and which are identical with, or show nearest affinities to, repre- 

 sentatives in the Modoc region. 



MAMMALS 

 Reithrodontomys megalotis klamathensis. 



BIRDS 



Agelaius phoeniceus nevadensis (found at Mayten only, in Shasta 

 Valley; so not really a bird of the Trinity region as explicitly 

 defined). 



Melospiza melodia fisherella. 



Table 8. Sonoran species of the Trinity region which belong to variable 

 groups and which are identical with, or show nearest affinities to, repre- 

 sentatives in the humid coast belt. 



MAMMALS 



Neotoma fuscipes fuscipes (not exclusively a humid coast form; ranges 



across head of Sacramento Valley). 

 Sylvilagus bachmani ubericolor (extends also interiorly across head of 



Sacramento Valley). 



BIRDS 



Dryobates pubescens gairdneri (tending towards the race turati, of 



the Sacramento Valley and other faunas to the southward). 

 Psaltriparus minimus minimus (ranges somewhat beyond the most 

 restricted confines of the humid coast belt). 

 Table 9. Sonoran species of the Trinity region which are apparently 

 endemic, that is, different from related forms in any of the other faunas. 



MAMMALS 



Dipodomys californicus trinitatis. 



BIRDS 

 (none) 



Table 10. Species which are either so widespread through all the faunas 

 here concerned as to be non-significant in the present study, or which are 

 of unknown status. 



