228 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4th Se«. 



Holotype (No. 471), male, and allotype (No. 472), female, 

 collected at Hood River, Oregon, July 5, 1917, and June 20, 

 1917 (F. R. Cole), in the Museum of the California Academy 

 of Sciences. 



Paratypes in the author's collection, from Hood River. 



11. Leptomydas pantherinus Gerst. 



(Plate 15, fig. 10) 



The male of this species has never been described. Osten 

 Sacken described the female in "Western Diptera" and a num- 

 ber of specimens taken at Hood River seem to agree very well 

 with the description. The species is variable in color and 

 extent of the markings. 



Male: Length 11 mm. Head black. Frons excavated, sides of frons, 

 occiput, face and cheeks with bushy bright yellow pile. Antennae varied in 

 color, in some specimens almost all black, usually first two joints reddish. 

 First joint about twice the length of the second, the third more than three 

 times the length of the first two; terminal club about equal to rest of 

 antennae and coarctate on first third of its length ; proboscis brown. 



Thorax jet black, shining on sides and in front of scutellum; scutellum 

 very small and shining black ; a fan-shaped tuft of yellow pile on sides of 

 thorax ; two longitudinal stripes of sihort yellow pile on dorsum, a yellow 

 tuft in front of scutellum and on each side (Fig. 10) ; pleura shining black; 

 a yellow tuft of pile beneath wings and on each side of halteres ; halteres 

 black. 



Abdomen yellow with anterior margin of segments black; the markings 

 vary somewhat, lateral margin black in varying degrees; pile of abdomen 

 short and sparse, longer on first segment ; some short black pile on the 

 black abdominal markings ; genitaHa reddish yellow. 



Legs yellow with short yellow spines and pile ; hind femora broadly 

 blackish above almost to apex ; middle and front coxae mostly yellow, the 

 hind ones black ; four strong spines beneath apical half of hind femora ; 

 wings mostly hyaline, yellowish along veins and anterior margin ; veins 

 yellowish; venation normal (Fig. 10) ; twelve specimens collected at Hood 

 River, Ore., July 7, 1917 (F. R. Cole). 



Female: Basal joints of antennae with yellow pile; facial callosity yel- 

 lowish ; thorax reddish in ground color, an indistinct black mark on each 

 side on dorsum, and one in front of scutellum ; upper pleura, humeral calli 

 and margin of scutellum yellow ; prothorax yellowish ; venter yellow, the 

 base of segments 2, 3 and 4 narrowly black ; first segment of abdomen with 

 a yellow spot on the posterior lateral margin. Length 21.5 mm. 



Osten Sacken's description in "Western Diptera," translated 

 from the original, is a very good one. 



Allotype (No. 473), male, in Museum of the California 

 Academy of Sciences. 



