OF WASHINGTON, VOLUME XIV, 1912. 97 



corner of the cephalothorax, another a short distance behind this, one on 

 the humerus, three each side behind, the first the longest, and one each 

 side at tip, and near this is a short clavate pair. Legs with wrinkled edges; 

 leg I about one-half the length of the body, leg IV scarcely longer than 

 width of the body. Length 0. 35 mm. 



From Phoenix, Arizona, on bark of ash tree (Morrill). 

 It is similar in appearance to T. cuneatns, but distinct by the 

 large bristles. 



Tenuipalpus inornatus, new species. 



Yellowish. Body about twice as long as broad, very broad in front, 

 the sides of the cephalothorax nearly parallel, abdomen tapering to the 

 rounded tip; above with two or three transverse lines toward tip; no 

 bristles noticeable on body; the cephalothorax nearly twice as broad as 

 long, anterior margin slightly evenly convex; mandibles large and promi- 

 nent, palpi short, last joint slender; legs I and II rather stout, sides crenu- 

 lated, as long as width of the cephalothorax, not crowded up to the beuk; 

 hind legs more slender; leg IV reaching to tip of the abdomen; all legs 

 without apparent hairs, except short ones at tips of the tarsi. Length, 

 0. 3 mm. 



From Batesburg, South Carolina, on golden-rod (H. F. 

 Wilson). 



Tetranychus longipes, new species. 



Yellowish. Body about one and a half times longer than broad; cephalo- 

 thorax fully twice as broad behind as long; a pair of short bristles in front, 

 and four rows of short bristles on dorsum of the abdomen, none as long as 

 the patella of the hind legs. Mandibular plate rather broad, tip rounded, 

 not emarginate; palpi stout, the thumb shows two fingers, subequal in 

 size, and a hair at each corner. The legs are long, slender, and with few 

 stiff bristles; leg I is longer than the others, plainly longer than the body; 

 leg IV is a little longer than the body, the femora very slightly thickened 

 on the basal part; claws two, simple. Each side of the mandibular plate 

 is a slender curved process, not visible in all specimens. Length, 0.5mm. 



From Springer, New Mexico, September 29, swept from 

 Ai^ropvron (a grass) (C. N. Ainslie). Also from Holtville, 

 California, March 25 (Wildermuth). 



Evidently related to T. latns Can. and Fanz., which occurs 

 on box trees in Italy; however, leg i is still longer than in that 

 species. 



Tetranychus pratensis, new species. 



Pale greenish. Body nearly or quite twice as long as broad, rather 

 more elongate' than usual, broadly rounded behind; without humps above, 

 with the usual four rows of rather long bristles, those above longer than 

 the hind tarsi. Legs short, none as long as the body, with many long 

 hairs, some extremely long, being as long as two joints together. Man- 



