1928] 
Notes on the Genus Proctacanthus 
13 
Carolina, and — as the specimens taken in these regions fit his 
description — it is very probable that it was this species with 
which he was dealing. The name rufus should, therefore, be 
applied to the eastern species with the dark thorax and narrow 
hypopygium. The western species (which, however, comes as 
far east as Ohio and Kentucky) with the uniform light red 
thorax and enlarged hypopygium is a new species. I should 
note that this designation of “Eastern” and “Western” species 
is more or less arbitrary. I have seen specimens of Williston’s 
rufus from Oklahoma. 
I am, therefore, proposing a new name for Hine’s P. rufus. 
I take pleasure in naming this species Prodacomthus hinei in 
honor of this worker who has contributed so much to the know- 
ledge of this interesting family of flies in this country. 
Proctacanthus hinei new species. 
cT Total length 33 mm. Dull reddish species with genitalia 
from above wider than last abdominal segment. Antennae red- 
dish with black bristles. Facial gibbosity prominent, dull red. 
Proboscis upturned at tip; black above, red beneath. All hairs 
of head (mystax, beard, palpal hairs) white, some with faint 
yellowish tinge, particularly in mystax. A few black bristles on 
vertex and occiput. Thorax and legs dull reddish. Legs with 
black bristles and spines. Mass of white hairs on anterior part 
of pro-coxa. Bristles of scutellum and posterior dorsum of thorax 
black. Fine hairs on anterior dorsum of thorax also black. 
Pleurae with fine whitish bloom. A few black bristles on meso — 
and meta — coxae. Tuft of hairs in front of halteres pale yellowish. 
Wings nearly clear with light, reddish veins. Abdomen yellowish- 
red, except first tergite and anterior half of second which are 
very dark red — practically black. Anterior four or five incisures 
darker than rest of abdomen. Sides and venter of anterior por- 
tion of abdomen with thin, white pile. A few black hairs on 
sides of first tergite. Genitalia yellowish-red with fine hairs, 
some black, some pale yellowish. Genitalia wider than last ab- 
dominal segment, the appendages from dorsal view wide at 
base, narrowing toward apex. 
