NO. 2099. THE DIPTEROUS GENUS SYMPHOROMYIA—ALDRICH. 135 



almost as long black pile as the front; third antennal joint kidney- 

 shaped, wider than the first joint; sides of face with shorter and less 

 dense, erect black pile than in the male; palpi broad near tip (some- 

 times this is indistinct owing to the organ bemg shriveled), cinereous 

 pollinose, with varying yellow and black pile. Proboscis about half 

 as long as height of head, the inner organs usually projecting beyond 

 the retracted labella. Thorax with black pile, that of the metapleura 

 however conspicuously yellow; halteres yellow with black knob. 

 Coxae except sometimes the middle ones with yellow pile. Wings 

 very little infuscated, the veins yellow at base. Abdomen tapering, 

 cinereous, dark above, the pile almost all yellow. 



Length of male, 6 mm. ; of female, 6-9 mm. 



24 specimens, both sexes; 3 females,^ California (Bigot's type 

 material of comata); Portola and Woodside, California (J. M. A.); 

 San Geronimo and Sausalito, California (Osten Sacken); Stanford 

 University (Doane); Humboldt County, California (U.S.N.M.); Cor- 

 valhs, Oregon (Kmcaid) ; GaUatin County, Montana (Cooley) ; Olym- 

 pia, Wasliington (Kincaid); Williams, Arizona (U.S.N.M.), 



The Arizona specimen bears the label "Biting." Riley and 

 Johannsen^ state on the authority of Dr. J. C. Bradley that pachy- 

 ceras is "a vicious biter." 



I have seen the types of WHliston's description. Bigot was too 

 hasty in admitting the synonymy of trivittata, which has a bare face, 

 though Bigot described it as hairy. 



SYMPHOROMYIA PILOSA, new species. 



Male. — A slender species with yeUow antennae, palpi, and legs 

 except femora, characterized by long and abundant pale pile, that 

 of vertex, antennae, and sides of face reddish; third antennal joint 

 concave below arista; middle coxae with long, curved, thornlike 

 cluster of bristles. 



Eyes narrowly contiguous below ocelli; first antennal joint of 

 medium length, a little swollen; third axe-head-shaped, the edge 

 downward, vertical diameter slightly greater than that of first joint, 

 arista wholly yellow; sides of face very pilose; palpi yellow, with 

 reddish-yellow dense pile; proboscis short, the labella fleshy; beard 

 yeUowish-white. 



Mesonotum cinereous for a broad space in the median part, red- 

 dish laterally; the color of the long pile varies much in difi^erent lights, 

 yeUow or red or blackish; scutellum brown on disk, with the blackest 

 pile of the whole body; pleurae reddish-brown, the propleura, meso- 

 pleura, and hypopleura with abundant pale pile; halteres with infus- 

 cated knob. 



« Medical Entomology, 1915, p. 112. 



