Vol. XI] COLE AND LOVETT— LIST OF OREGON D1PTERA 293 



587. Criorhina' luna Lovett 



Alsea; Tillamook, 111-26 (Burrill) ; Mary's Peak, V and 

 VI (Lovett). 1919, Proc. Cal. Acad. Sci., Ser. 4, IX, 

 p. 249. 



588. Criorhina nigripes (Will.) 



Corvallis; Forest Grove, IX-14 and Hood River, IV and 

 V (Cole). A specimen believed to be a male labelled "Stan- 

 ford Univ., Cal., Feb. 28, 1909," has certain markings 

 varying from the female as follows : Face similar, tubercle 

 more prominent; fairly abundant elongate yellow pile from 

 base of antennal prominence out to and extending down 

 along eye margin. Above antennal prominence with a trans- 

 verse appressed line; vertical triangle opaque. Thorax and 

 abdominal markings similar to female except fifth segment 

 with short black pile. Legs black with elongate light yel- 

 low pile. Tarsal claws yellow at base. 



589. Criorhina quadriboscis Lovett 

 Mt. Jefferson, IV- 16 (Hartley). 1919, Proc. Cal. Acad. 

 Sci., Ser. 4, IX, p. 250. 



590. Criorhina tricolor Coq. 

 Mt. Jefferson, VII-VIII (Bridwell) ; Hood River, VI-17 

 (Cole). Redescribed in 1919, Proc. Cal. Acad. Sci., Ser. 4, 

 IX, p. 251. 



591 Spilomyia interrupta Will. 

 Corvallis, IX (Bridwell); Hood River, VIII-24 

 (Childs). 



592. Sphecomyia brevicornis O. S. 

 Hood River, VI-6 (Cole). One pair taken. 



593. Sphecomyia nasica Osburn 

 Mt. Jefferson, VII-VIII (Bridwell, Lovett). 



594. Sphecomyia pattoni Will. 



Mt. Jefferson, VII-VIII (Bridwell, Lovett). These last 



two species as I have observed them in August are rare, 



found entirely in the forenoon, occurring just at the edge of 



clearings and flying swiftly, close to the ground, resting 



December 14, 1921 



