36 Psyche [April 
the distance from the root of the wing to the tip of the second 
vein. 
Female: Differs from the male in having the knob of the halteres 
yellow; the front as wide as the face and covered with yellowish 
white pollen; face as wide as long, divided near the center of its 
length by a sinuated suture, pollen of the face white. 
Described from nineteen males and eight females taken in Los 
Angeles Co., Calif., April 3-29. 
D. junctus is very much like D. gibbosus V. D. but has grayish 
pollen on the thorax, while that on the thorax of gibbosus is dis- 
tinctly brown. The appendages of the hypopygium seem more 
complex than in gibbosus but these cannot always be seen and I 
have not seen the hypopygium of gibbosus stretched out to any 
extent. The pulvilli of the middle and hind feet seem a little 
more developed, it seems less variable than gibbosus which measures 
from 2-3 mm. and in which the tibie vary in color from quite 
yellow to wholly black, while I have not seen any specimens of 
this species in which the tibize were not black. 
I think there is no doubt that this is a distinct species from han 
found in the east, the color of the pollen of the thorax seems to 
separate it and in life its brighter metallic color give it a very 
different appearance from our eastern species. I found it abund- 
ant in Los Angeles along the river on foliage, also took it at Los 
Cerritos by the Los Angeles river on foliage and on the wet sand. 
Diaphorus snowii sp. nov. 
Male: Length, 4 mm. Eyes contiguous on the center of the 
front, or nearly so; face a little longer than wide, almost black and 
with dark gray pollen; palpi and proboscis black; antenne black, 
third joint slightly wider than long, flattened at tip in outline and 
with a slight notch for the insertion of the arista; inferior orbital 
cilia delicate but rather long and of a sordid whitish color. Thorax 
green with thin gray pollen, sometimes with longitudinal coppery 
stripes; pleurse more blackish. Abdomen dark green, moderately 
shining; hypopygium conspicuous, concolorous with the abdomen, 
its appendages very small brownish lamelle with black hairs, 
bristles at tip rather large; venter black with brownish hairs. 
Coxe and feet altogether black, except knees and fore trochanters 
which are more or less yellowish; all the pulvillii much enlarged; 
