236 CALIFORNIA ACADEMY OF SCIEXCES [Proc. 4th Ser. 



on sixth small ; wings hyaline, the apical third faintly infuscated ; the veins 

 pale at wing-base but no striking white color in this section of the wing 

 membrane. 



Holotype (No. 487), male, and allotype (No. 488), female, 

 in the Museum of the California Academy of Sciences, both 

 taken at Dee, in the Hood River Valley, Oregon, August 1, 

 1917, by L. Childs. 



Paratypes in the collections of L. Childs, Corvallis Agricul- 

 tural College, and in the author's collection. A series of nine 

 females and three males were taken by L. Childs at Dee, Ore- 

 gon. Other specimens from Joseph, Ore. ; Mt. Jefferson, July 

 15, 1907 (Bridwell) ; Sherwood, Ore., July 29. 



This species might be made the type of a new genus. The 

 mystax is composed of strong bristles, and in the typical Meta- 

 pogon it is composed chiefly of fine pile. The head is hardly as 

 wide as the typical form, and the face more widened below. 

 The thorax is not highly arched, but more like that of 

 Lestomyia. 



22. Cophura cyrtopogona Cole, new species 



(Plate 18, fig. 19) 



Male : Length 6 mm. Wholly Wack ; most of pile and spines white ; 

 frons thinly gray-pollinose and with sparse white pile ; ocellar tubercle with 

 white pile and several slender white bristles ; face white-poUinose and with 

 long white pile reaching to base of antennae ; a few black hairs on oral 

 margin ; face gently and evenly convex, the oral margin retreating ; occiput 

 white pollinose and pilose ; very little pollen on vertex ; pile under the head 

 white ; proboscis and palpi rather small ; antennae black, the basal segments 

 with white hairs and spines below ; third segment not much longer than 

 basal ones, the style about as long as the second segment and terminating 

 in a fine bristle (Fig. 19). 



Thorax, pleura and coxae silvery gray-pollinose ; thoracic dorsum mostly 

 covered with a brown design, resembling that on some species of Cyrto- 

 pogon; posterior portion of dorsum and thin median line semi-shining; 

 pile brown in the middle, white in front and behind ; pile of pleura white, 

 including tuft in front of the yellow halteres ; scutellum thinly white-pol- 

 linose above, with the apical margin shining and a marginal row of hair- 

 like, white, upcurving bristles ; some white pile on dorsum of scutellum. 



Abdomen polished blue-black, almost bare above and sparsely pilose on 

 sides, except the longer white pile on segments one and two; sides of first 

 segfment silvery pollinose ; a silvery pollinose spot on posterior angles of 

 segments two to six, very small on the sixth ; genitalia polished black with 

 sparse white pile. 



Legs black, with white pile ; underside of front two pair of tibiae short 

 golden pilose ; spines of legs mixed white and yellow, those beneath fore 

 tarsi deep yellow ; fore tibiae with a terminal claw-like spur ; claws black 

 except at extreme base ; femora with long but sparse white pile below ; 



