NO. 2099. THE DIPTEROUS GENUS 8YMPH0R0MYIA—ALDRICH. 133 



The type material mentioned by CoquUlett consisted of three 

 females, collected in California in May; this I examined in the United 

 States National Museum. The male has not yet been recognized. 

 This is the only species yet known which has the first joint of the 

 antenna paler than the following ones, although several species 

 show the reverse coloration. 



SYMPHOROMYIA MONTANA, new species. 



Male. — A dark opaque species, thorax with three broad black 

 stripes narrowed behind, abdomen opaque with brownish cinereous 

 pollen; antennae black; face bare; halteres infuscated; legs except 

 knees black (in female tibiae and base of tarsi yellow). 



Head much wider than thorax; eyes not quite contiguous; ocellar 

 triangle with black pile; frontal triangle bare; first antennal joint 

 cinereous, long, swollen, with long black pile all round; third joint 

 small, convex below arista, its vertical diameter two-thirds that of 

 the first; palpi black with mixed but mostly black hairs; proboscis 

 short, labella fleshy; beard long, whitish, the anterior part a little 

 blackish. 



Mesonotum as described, pile long, rather delicate, blackish; 

 scutellum and pleurae dark cinereous, the former with erect black 

 pile the latter with mostly whitish, some on mesopleura blackish; 

 halteres with brown stem and blackish knob. 



Abdomen rather robust, gray-brown, opaque, with long pale pile. 

 Legs rather shining black, knees red. 



Female. — Opaque yellowish-brown, thorax with three blackish 

 stripes; front above antennae decidedly wider than the eye; abdomen 

 long and broad; tibiae and base of tarsi yellow. 



Front with short yellowish pile; first antennal joint short, black, 

 yellowish pollinose, its pile short and mostly whitish; third small, 

 black, convex below arista, its vertical diameter about equal to that 

 of the first; face very broad, bare; palpi brownish-yellow with pale 

 hairs; proboscis short, labella fleshy; beard pale yellow. 



Thorax yellowish opaque (in well preserved specimens distinctly 

 trivittate), with short yellowish pile; pleurae concolorous with pale 

 pile; hatleres brown, with dark-brown knob. 



Abdomen long and broad, uniformly yellowish-brown pollinose, 

 with yellow pile. Femora black except apices, tibiae and base of 

 tarsi yeUow, hind ones somewhat darker than the others. 



Length of male, 6.7 mm.; of female, 7.5 mm. 



Males: Bozeman, Montana, July 20, 1906, R. A. Cooley (type) ; 

 Armistead, Montana (Cooley); Prince Albert, June 18, 1905 (T. S. 

 Wniing); Ungava Bay, Hudson Bay Territory (Turner, in C. W. 

 Johnson's coll.); Farewell Creek, South Saskatchewan (C. W. J.). 



Females: Bozeman, Montana, June 18, 1913 (Cooley); Bozeman, 

 Farewell Creek; also three females from Wliite Mountains, New 



