1926] GrinneU-Bixon: Two New Races of the Pine Marten 415 



Measurements. — The skull of the type presents the following 

 dimensions: greatest length of skull, 78.8 mm.; condylobasal length, 

 77.2 ; basilar length of Hensel, 69.5 ; palatilar length, 37.2 ; zygomatic 

 breadth, 49.4; mastoid breadth, 36.6; breadth across postorbital 

 processes, 24.2; interorbital width, 19.3; width of rostrum at bases 



Fig. 9. Map showing distribution of Pine Martens in California : a, Mustela 

 caunna sierrae ; b, Mustela caurina liumholdtenMs. Based on catch of licensed 

 trappers of California for the five-year period 1919-1924, as reported to the State 

 Fish and Game Commission, each dot being the location of a trapper who caught 

 one or more martens. Presumed general range of each subspecies within history, 

 outlined. 



of canines, 17.6; height of brain-case at bullae, 31.0; anteroposterior 

 diameter of heel of last upper molar, 4.8 ; transverse diameter of same 

 tooth, 8.3. For dimensions of other skulls of vancouverensis, as also 

 of nesophila, and for body measurements of both these races, see 

 Swarth (1912, p. 105) ; and for dimensions of skulls and teeth of 

 caurina see C. H. Merrian (1890, pp. 28-29). 



