1928 ] 
New Oribatoid Mites 
215 
Type locality : — orchard, one mile west of East Village, Mon- 
roe, Conn.; lower face of old rail, soft moist spot; Aug. 22, 1927; 
coll, the writer, 33 specimens, no. 2527h2. Cotypes : — M. C. Z. 
Phthiracarus setosellus sp. n. 
Size somewhat small (.34 x .54 mm.); aspis anteriorly de- 
pressed, posteriorly flattened, posterior bristles near median; 
pseudostigmatic organ short, scalpel — or lancet-like; abdomen 
rather elongate, oval, widest at center, bristles long, tapering, 
fine, five pairs in median row; ventral bristles at suture, the 
posterior pair remote from each other; anal plates as wide as 
as posterior end of genital plates, median bristles more lateral 
than in preceding; genital plate bristles: two marginal, five 
median, the posterior-most marginal; color pale tan; texture 
sanded. 
Type locality : — Glen Cove, Long Is., N. Y. ; from rotten 
wood and under bark slabs; May 8, 1920; coll, by writer, 5 
specimens, no. 209h. Cotypes : — M. C. Z. 
III. From Switzerland. 
Achipteria oudemansi sp. n. 
Size rather large; .34 x .64 mm., thus extremely slender; 
lamellae with inner distal angle more anterior than outer, as seen 
from above elongate ovate i. e. anterior half wider than posterior 
half; base of lamellar bristles close to end of lamellae; noto- 
gaster extremely pinched together between lamellae forming an 
acute angle and extending far in between them; interlamellar 
bristles opposite end of notogaster and inserted on the lamellae; 
pseudostigmatic organ long, slenderly clavate, extending far be- 
yond sides of pteromorphae which are drawn out into long, 
slender horns, their ends turned inward almost touching the la- 
mellae; anterior end of camerostome pointed or carinate; an- 
terior ventral angle of pteromorphae drawn out into a sharp 
corner; anal covers the diameter of one of them distant from 
posterior edge of ventral plate. 
Type locality: — Les Rasses, St. Croix, Vaud: moss, near a 
wall; Aug. 10, 1927; coll, by Mr. Auguste D. Jacot, 6 specimens, 
no. 270301c. Cotypes in the writer’s collection. 
