NO.2099. THE DIPTEROUS GENUS SYMPHOROMYIA—ALDRICH. 141 



suture wholly white; halteres pale yellow; pleurae and coxae dcnsly 

 ashy poUuiose. 



Abdomen concolorous with pleurae, a slight indication of a median 

 brown line; pile mostly white. Femora brownish-red, 

 tibiae yellow, tarsi gradually darker beyond about the 

 middle. Wings nearly hyaline, veins pale at base, 

 stigma brown, venation normal. 



Length, 5 mm. fig.u.-outee 



One specimen collected by Osten Sacken, Sonoma side of right 

 County, California, July 6, 1876. The male is unknown. ofTseSr^ 

 The species is peculiar in the strongly developed, narrow fera, show- 

 dark-brown lines of the thorax; other species have uke a^gglom- 

 fainter grayer lines, and as far as I have noted the eration of 

 middle one is either double or much wider than in this J^^istles. c, 



coxa; F, fe- 

 Case. mur; T, tko- 



I examined the single female type in the United States chanter. 

 National Museum; it agrees perfectly, showing also the beginning of 

 a stripe on the abdomen. 



SYMPHOROMYIA TRIVITTATA Coquillett. 



Symphoromyia trivittata Bigot, Bull. See. Zool. France, vol. 12, 1887, p. 13, male. 

 Colorado. — Coquillett, Joiirn. New York Ent. Soc, vol. 2, 1894, p. 56, male 

 (fera). Colorado. 



Male. — (Bigot's type.) The specimen is in fine condition, but 

 has lost the third antennal joint on the right side and part of the 

 right front tarsus. Comparing with Bigot's description, the palpi 

 have pale hair except about the tip; the face is bare, only the bucca 

 having the cinereous villosity; there is no black hair on front except 

 on ocellar triangle; and the tibiae are more decidedly yellow than 

 indicated. Nevertheless, the three brown stripes of the mesonotum 

 are so distinct that no doubt can exist that this is Bigot's type- 

 specimen, and the original label in Bigot's writing is attached to it. 



Bigot himself ^ stated that trivittata is a synonym of loacliyceras, 

 and the statement has been accepted up to the present; it is, how- 

 ever, a mistake. Depending upon Bigot's disposition of his own 

 species, and especially upon the statement that trivittata has a pilose 

 face, Coquillett naturally failed to recognize the species, and rede- 

 scribed it under the name of fera, as I found by placing the two 

 types side by side at the United States National Museum. 



Eyes barely contiguous, frontal triangle bare, cinereous pollinose; 

 antennae black, first joint cinereous, swollen, long, with long blackish 

 hair above and below; third joint small, convex below the arista, its 

 vertical diameter hardly as much as that of the first joint; face bare, 

 very deeply grooved; palpi black, with long pale hairs, mostly chang- 



1 Bull. Soc. Zool. France, vol. 12, 1887, note following p. 22. 



