72 



NORTH AMP^EICAIS" FAUXA. 



[No. 37. 



After a season's exploration of the southern part of Vancouver 

 Island, Swarth came to the conclusion that the species is probably 

 confined to a small area in the vicinity of Mount Douglas. He states : 



We found them in the mountains at the head of China Creek, some 20 miles south 

 of Alberni, in the Golden Eagle Basin, and King Solomon Basin, and on the sur- 

 rounding slopes and ridges. They were most abundant on Mount Douglas, the peak 

 to the west of King Solomon's Basin. Wherever the ground was bare of timber, or 

 but sparsely covered, as is the case over extensive areas at this point, the marmots 

 had established themselves, burrowing under the rocks, and apparently never wander- 

 ing very far from home. * * * Their extreme wariness is correlated with con- 

 spicuousness, for the dark brown pelage shows in marked contrast against either gray 

 rocks or green grass. * * * They whistled but seldom, only one or two being 

 heard diuing the three weeks we spent in their territory.^ 



None was found in apparently suitable situations on Mount Arrow- 

 smith, and certain timber cruisers who had explored the wilder parts 

 of the island stated that they had never seen a marmot. 



Specimens examined. — Total number, 11,- as follows:^ 



British Columbia: Golden Eagle Basin, 1; King Solomon Basin, 3; Mount 

 Douglas, 7. 



Cranial Measurements of the Marmota caligata Group. 



No. 



Species and locality. 



Sex. 



j 



Condylo-basal length, i 



1 Palatal length. 



1 Postpalatal length. 



Length of nasals. 



1 Zygomatic breadth. 



1 Breadth across mas- 

 1 toids. 



e a s t interorbital 

 ! breadth. 



Breadth of rostrum. 



Maxillary tooth row. 



Remar] 





Marmota caligata caligata. 

























131440 



Becharof Lake, Alaska 





99 



56.8 



36.8 



38.4 



68 



46.2 



27.6 



26.1 



22 



Adult. 



131441 





[c??] 



96.5 



55.7136.5141.4 



64.7 



44 



24.3 



24 



22.3 



Do. 



131442 







100.6 



57.4138.2142.3 



67.8 



44 



25.8 



24.1 



23.8 



Do. 



98154 



White Pass, Alaska 





100 



57. 7 



37.8 



43 



65.2 



44.2 



23.4 



23.6 



23.4 



Do. 



131444 



Becharof Lake, Alaska 



[??] 



92.8 



53 



35.8 



38 



63.4 



43.2 



24.3 



22.9 



21.9 



Do. 



128069 





[9?] 



96.4 



53.9 



38 



39.1 



64.1 



43 



23.9 



24.5 



22.5 



Do. 



98153 



White Pass, Alaska 



9 



88.9 



51 



33.5 



40.5 



57.5 



40 



22.1 



20 



22 



Do. 



135161 



Head of Coal Creek, Yukon 



9 



94 



53.9 



36 



38 



82.3 



43.3 



24 



22.1 



21.7 



Do. 





Marmota caligata vigilis. 

























M18 





c? 



97.2 



55.8 



36.7 



38.9 



62 



43.5 



22.6 



21.1 



22.3 



Do. 



4 427 







97.3 



54.7137.8 



41.4 



64.8 



43.2 



24.2 



22 



21.8 



Do. 



97952 





c? 



98.4 



55.5,38 



41.5 



67.7 



44.6 



26 



23.5 



22.5 



Do. 



97953 





9 



93.7 



51.6 



37.7 



39.6 



61.8 



42.3 



24.5 



21.3 



22 



Do. 





Marmota caligata sheJdoni. 

























137319 



Montague Island, Alaska 





89.5 



51.2 



34.3 



35 



61.5 



41.3 



22.5 



20.5 



22.5 



Do. 



4 962 



do 



d 



96.6 



55.4136 



39 



63 



42.3 



23.5 



21.6 



23.1 



Do. 



4 961 





[c??] 



96 



54.5'37 



38.8 



63.4 



42.4 



23.8 



21.8 



22.4 



Do. 



4 969 





[c??] 



92.3 



52.2.34.8136.4 



61.5 



41.5 



23.2 



21 



22.2 



Do. 



4 960 





9 



88.7 



50.2134 



37 



59.4 



39.7 



22.2 



20.5 



21.8 



Do. 



1 Swarth, H. S. Univ. of California Publ. Zool., X, 1912, pp. 89-^0. 



2 All in collection Mus. Vert. Zool., Univ. of California. 



» All about 20 miles south of Alberni, British Columbia, within a radius of 10 miles. 

 4 Collection Mus. Vert. Zool., Univ. of California. 



