82 ENTOMOLOGICAL NEWS. [Mar., 'iS 



This mountain is the highest of the whole region in which it 

 is situated. It rises to a height of about 4,000 ft. above the 

 sea level, and can be seen from many points of the Willamette 

 Valley, with its long "hog-backed" north spur and its precipi- 

 tous south slope. Beginning at its base Mary's Peak is densely 

 wooded, and continues so almost to its very top. The entire 

 top, including a considerable region to the southwest, is quite 

 bare of trees, but is thickly covered with a heavy growth of 

 grass. The only places that are somewhat open below this 

 grassy region are a few along the streams which rise from the 

 base of the snowline. Snow stays on the top of the mountain 

 for six or eight months of the year and, around the base of 

 the grass land, drifts do not melt away until June or July. 

 The forest trees found at the base are chiefly Douglas fir with 

 a few Pacific coast white oaks. Higher up are cedars, and 

 near the top the noble fir. Along the streams are thimble- 

 berries and vine maples. There is a good rainfall over the 

 whole of the mountain, and the vegetation is luxurious-. 



The types of the new species and varieties described below 

 are in the author's collection. 



A LIST OF SPECIES AND VARIETIES RECORDED FROM MARY'S PEAK. TO- 

 GETHER WITH DESCRIPTIONS OF NEW ONES. 



Family ORIBATIDAE. 

 Eupelops monticolus n. sp. (PI. Ill, fig. 1). 



Color of species a chestnut brown. Lamellae very large, of about 

 equal width throughout, and almost as long as the cephalothorax. 

 Pseudostigmatic organs extending forward, clavate, and slightly 

 pectinate. Abdomen about as broad as long, evenly rounded behind, 

 and bearing a few minute hairs. Genital opening roughly rectan- 

 gular and situated about one and one-third times its length in front 

 of the anal opening. Anal opening larger than the genital opening, 

 somewhat circular in outline, and situated about two-thirds its length 

 from the posterior margin of ventral plate. Tarsus of leg I about 

 equal to tibia in length. Integument of lamellae and pteromorphae 

 irregularly tuberculate. Length, 0.48 mm. ; width, 0.33 mm. 



From top of Mary's Peak, Oregon : in moss ; by the writer. 

 Three specimens obtained. 



Eupelops monticolus Swing, var. subborealis n. var. (PI. Ill, fig. 



2). 

 This variety is somewhat smaller than the type. The pseudo- 



