12 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.65. 



curved outward when viewed from the side ; their outer surface with 

 about four equally spaced spines, their inner, posterior apical half 

 with nine similar spines not in a regular row; the opposite surface 

 with more or less regular hairs. Coxae grayish-white pollinose, 

 with fine yellow pile, the front ones with a row of black bristles. 



" Wings largely clear hyaline, but beyond the middle the cells are 

 cinereous, fading out apically; on the cross- vein is a double, fused 

 spot occupying all either end, and a second spot on the curve of the 

 last section of the fourth vein; there is also a streak in the discal 

 cell, and the area behind the fifth vein from the tip of the sixth vein 

 is darker, but fades out marginally. 



"Abdomen on basal four segments and side of the fifth, coppery, 

 the fifth and sixth bronze green; except the sixth segment, rather 

 abundantly yellowish-gray pollinose. Fillaments black basally, be- 

 coming brown, the apical half yellow: the basal portion, which is 

 directed to the upper margin of the abdomen and about one-fifth of 

 the second portion, Avhich is directed backward, is black ; from there 

 to about the second third of this portion it is yellowish brown, the 

 last third yellow; the second portion is terminated in a broad, in- 

 ferior ciliae of yellow hairs, which extend all along the yellow por- 

 tion, and the third portion curves obliquely upward from this point, 

 again curving back, but the pointed end curved a little upward ; the 

 outer upper margin of the last section, not reaching to the tip, is 

 cilate, with pale yellowish or white hairs, which are directed down- 

 ward so as to cover the whole of this side of the filament. The termi- 

 nal lamellae are fuscous, broadened and then ending in a pair of 

 parallel processes, which are long, flattened and subpointed, each 

 bearing four or five not long black hairs apically. 



^^ Holotype — Male, Saanich, British Columbia, May 17, 1919 (W. 

 Downes), No. 554 in the Canadian National Collection, Ottawa." 



In looking over the above description I find there are some details 

 of some of the characters which have been omitted. As I had the 

 following description written for this new species I thought it would 

 be of interest and important enough to give it as I had intended to 

 publish it. 



Medium-sized species bronze, gray dusted; wings tinged with yel- 

 lowish-brown (more so in the female) ; antennae short and normal. 



Dorsum of thorax opaque, ashen gray with two approximated, par- 

 allel, central, dark, dull brown stripes extending backward to the 

 penultimate pair of bristles, from here the stripe is solid, dark 

 bronze, metallic (the width of this stripe almost equal to the space 

 between the two stripes) ; the bristles of the two central rows are each 

 located on a brown spot; halteres yellowish white; wings more hya- 

 line in the male, decidedly brownish in the female; the costal vein 

 to the tip of the first vein and the entire first vein yellow, all the 



