106 BULLETIN 66, UNITED STATES NATIONAL MUSEUM. 



Professor Packard originally described this species as follows: 



Male. — The whole body, the antennae, and the appendages of the mouth were 

 velvety black; abdomen slightly brownish; legs and anal forceps pale resinous brown; 

 the tarsal joints, and tips of tibiae pale testaceous (Packard, 1864). 



This name also is given in order to straighten out the synonymy 

 and with the assurance that material will soon be forthcoming from 

 which more accurate descriptions can be made. 



25. STYLOPS POLEMONII, new species. 



Host. — Andrena polemonii Robertson (?); Colorado; C. F. Baker, 

 collector. Described from one female and its triungulinids from the 

 Baker collection of the U. S. National Museum (pi. 4, fig. 4). 



Female. — Length of cephalothorax 0.58 mm., breadth at spiracles 

 0.52 mm., breadth of base of head 0.31 mm., distance between mandi- 

 bles at base 0.07 mm. Cephalothorax light brown, with dark-brown 

 band at base, a little more than half on the first abdominal; longer 

 than broad, wedge shaped, narrowly but squarely truncate at apex; 

 truncation about one-fourth the breadth at the spiracles. Lateral 

 margin slightly convex to spiracles; posterior portion transversely 

 quadrate. Spiracles lateral, but not prominent. Mandibles rounded 

 with acute curved tooth at apex. 



Triungulinid : Length of body 0.13 mm., length including stylets 

 0.18 mm., breadth of head 0.02 mm., greatest breadth 0.03 mm., 

 breadth of ninth abdominal segment 0.018 mm. 



The characters are essentially the same as those described for 

 Stylo ps calif ornica. 



Type.— Cat. No. 10097, U.S.N.M. 



26. STYLOPS SALICIFLORIS, new species. 



Host. — Andrena (Trachandrena) salicijloris Cockerell (det. H. L. 

 Viereck) ; Washington, and Seattle, Washington, on gooseberry. 

 Described from two females (pi. 4, fig 5). 



Female. — Length of cephalothorax 1.01 mm., breadth at spiracles 

 1.04 mm., breadth at base of head 0.64 mm., distance between mandi- 

 bles 0.14 mm. Cephalothorax light yellowish brown, with slightly 

 convex dark-brown band at base, half on thorax and half on first 

 abdominal; about as long as broad, broad- wedge shape, narrowly 

 truncate; truncation slightly convex, more than one-fourth the 

 breadth at the spiracles. Lateral margin wavy, convex. Mandibles 

 rounded obtuse, with sharp curved tooth at apex. Spiracles lateral, 

 slightly prominent. 



Type.— Cat. No. 10098, U.S.N.M. 



