348 University of Calif ornia Puhlicaiions in Zooloipj [V'ol. 21 



skull, taken in accordance with the methods used by the present 

 authors (see antea, p. 328), are as follows: Greatest length, 110.8 mm. ,- 

 basilar length, 91.9 ; palatilar length, 42.0 ; zygomatic breadth, 80.0 ; 

 mastoid breadth, 51.2; interorbital width, 21.6; width rostrum, 29.2; 

 length nasals, 22.4 ; diameter upper canine, 6.7 ; length upper car- 

 nassial, 13.7. This skull is closely similar to Mus. Vert. Zool. no. 2334, 

 male, taken in Tahquitz Valley, San Jacinto Mountains, July 26, 1908. 

 The latter is likely the older by some months. It departs from the 

 other notably in having smaller bullae, wider malars, and a well 

 marked bregmatic bone interposed medially between the front als and 

 parietals. But these features are of no phylogenetic significance, .just 

 as is the ease with the outstanding features of the pelts. 



Lynx rufFus fasciatus Rafinesque 

 Northwestern Wildcat 



Lynx fasciatus, Bryant (1801&, p. 113), part; as also of one or two other 



authors. 

 Lynx fasciatus oculcus, Grinnell (1913, p. 298), part. 



Diagnosis. — A race of wildcat characterized by average moderate 

 size, relatively short pelage the overhair of Avhich is relatively long 

 and coarse, dark (ferruginous) general tone of coloration, and great 

 extent of dark markings; skull moderately rounded and with ridges 

 fairly well developed. 



Measurements. — See accompanying tables. 



Distribution. — Inhabits the extreme northern humid coast district 

 in California and extends thence northward through Oregon and 

 Washington into British Columbia. This is the race in Del Norte, 

 western Humboldt, and northwestern Mendocino counties. Toward 

 the interior and to the south, merges into calif amicus. 



Specimens, skins-with-skulls or skulls only, are in the Museum of 

 Vertebrate Zoology from California as follows: Humboldt County: 

 Ferndale, 8 ; Carlotta, 2 ; Cuddeback. 2. Mendocino County : Layton- 

 ville, 3. Total, 15 specimens. 



Comment. — It is to be emphasized that the humid-coast-belt race 

 fasciatus does not within the limits of California show the extreme 

 manifestation of its characters that it does farther north, in western 

 Washington and in southwestern British Columbia. Our exam])les 

 from the Humboldt Bay district, Avhile pronouncedly darker toned 

 and more heavily spotted than wildcats from anywhere else in Cali- 

 fornia, might still be looked upon as merely intergrades between 

 calif ornicus and fasciatus. They are, indeed ; but it seems necessary 

 for the sake of convenience to place a line of separation somewhere, 

 and we have placed that line geographically as nearlj^ as we can judge 



