84 ENTOMOLOGICAL NEWS. [Mar., '18 



thorax. Genital opening subrectangular, smaller than anal opening, 

 and situated a little more than its greatest diameter in front of the 

 latter. Legs long; claws heterodactyle. Length, 0.71 mm.; width, 

 0.53 mm. 



From Corvallis, Oregon ; on ground under an old piece of 

 wood; by the writer. Several specimens. This species has a 

 variety, found at the top of Mary's Peak. 



Achipteria oregonensis Ewing, var. borealis n. var. (Text fig. 5). 



Differs from the type in being smaller, in having shorter cusps 

 to the pteromorphae, and in having the lamellar hairs less curved. 

 Length, 0.51 mm.; width, 0.39 mm. 



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

 by the writer. Only a single specimen secured. 



Jugatala lamellata n. sp. (Text figs. 6 and 7). 



A rather large, chestnut brown species. Lamellae very large, at- 

 tached to cephalothorax for about one-half their length, the free 



anterior part of lamellae about twice as broad as the attached pos- 

 terior part, and ending in two cusps, the outer being the longer. 

 Lamellar hair situated between lamellar cusps; curved, pectinate, and 

 almost as long as the lamella. Pseudostigmatic organs capitate and 

 simple. Abdomen almost as broad as long, and sparsely clothed with 

 curved, pectinate setae. Pteromorphae large, rounded on their ven- 

 tral margins. Genital covers smaller than anal covers and situated 

 about twice their length in front of the latter. Posterior legs not 

 extending beyond the tip of abdomen. All the legs provided with 

 long, almost subequal claws. Length, 0.77 mm. ; width, 0.53 mm. 



From the top of Mary's Peak, Oregon ; under a moist stone ; 

 by the writer. From Spenson, Oregon ; on rotting vegetable 

 material, by H. F. Wilson. Three good specimens obtained. 

 The type from Spenson, Oregon. 



Ceratozetes clavilanceolata (Ewing). 



Recorded from top of Mary's Peak, Oregon ; under rotting 

 logs ; by the writer. 



Oribatella minuta Banks. 



Recorded from top of Mary's Peak, Oregon ; in moss ; by 

 the writer. Recorded also from Corvallis, Oregon : under 

 bark of a log ; by the writer. 



Oribatella acuta n. sp. (PI. TIT, fig. 9, and text fig. 8). 



A smooth, dark chestnut brown species. Lamellae very large, at- 

 tached to the cephalothorax for over one-half their length, and each 



