88 ENTOMOLOGICAL NEWS. [Mar., '18 



From the top of Mary's Peak, Oregon ; under a rotting log ; 

 by the writer. From Coast Range Mountains, Benton County, 

 Oregon; under a log; by the writer. Two specimens, the type 

 from Mary's Peak. 



Family HOPLODERMATIDAE. 

 Phthiracarus maximus Ewing. 



From the top of Mary's Peak, Oregon ; under rotten logs ; 

 by the writer. From Coast Range Mountains, Benton County, 

 Oregon ; under logs ; by the writer. From Corvallis, Oregon ; 

 under a log; by the writer. 



THE RELATION OF THE FAUNA OF THE TOP OF MARY'S PEAK 

 TO THAT OF THE REST OF THE COUNTRY AND EUROPE. 



Here are recorded 18 specimens and varieties from the top 

 of Mary's Peak, all coming from far up in the boreal life zone. 

 Of these 18, we find 8 specimens and 4 varieties new to science. 

 In regard to the distribution of these 18 species and varieties 

 we find : 



3 are recorded from the top of Mary's Peak only. 

 7 are recorded both from the top of Mary's Peak and from the 

 surrounding region in the transition life zone. 



3 are recorded from both the Coast Range and Cascade Moun- 

 tains. 



2 species, recorded from the top of Mary's Peak, have distinct 

 Varieties at lower altitudes. 



4 species found at the top of Mary's Peak, have been recorded 



from the eastern part of the United States. 



I species from the top of Mary's peak is known to be widely 

 distributed in Europe. 



We find, therefore, that the beetle mite fauna of Mary's 

 Peak, while related somewhat to that of the eastern part of 

 the United States and Europe, is in the main quite distinct. 

 Further, it is equally distinct from the fauna of the Cascade 

 Mountains. Only 3 of the 18 forms recorded from the top of 

 this mountain were also recorded from the Cascade Mountains. 

 This is not because of lack of records from the Cascades, for 

 I have probably as many species from these mountains as from 

 the Coast Range. The beetle mites found on the top of Mary's 



