1928] 
Notes on the Genus Proctacanthus 
15 
Wied. but lighter in color and averaging larger. The abdomen is 
comparatively longer and the femora are uniformly reddish. 
The proboscis is longer and more slender than in brevipennis and 
the palpal hairs are all white. 
Proctacanthus gracilis new species. 
Total length, 26-30 mm. cf Proboscis slender, black. Palpi 
black. Hairs of palpi mystax, beard and post-gense nearly 
white with very pale yellowish tinge. Antennae dark reddish, 
second segment lightest. Occipital bristles and a few on vertex 
black. Frons light yellowish pruinose. Thorax reddish in ground 
color, with dark red median line and lateral vittse and covered, 
except the median line and vittse, with pale yellowish bloom. 
Coxal hairs and tuft in front of halteres pale yellow. Pronotal 
bristles, bristles on posterior part of mesonotum and scutelium 
black. Legs reddish with black bristles and fine pale hairs, the 
tarsi darker in color. Wings nearly hyaline with faint reddish 
tinge. Veins reddish. Ground color of abdomen reddish, but 
covered with pale yellowish bloom and fine pubescence. Side 
bristles on first abdominal segment black. There is an obscure 
brownish area in the center of each segment forming a broken 
median line along the dorsum of the abdomen. 
$ Same as male, but with blackish ovipositor with circlet of 
black spines. 
Holotype 6L Spring Creek, Decatur County, Ga. July 
16-19, 1912. Cornell U. lot 482 sub. 132. Coll. J. C. Bradley. 
Allotopotype $ , same date, lot and sub. 12 paratypes. All to- 
potypes but two. Of the latter, one bears the label “ Georgia,” 
and the other “Billy’s Island, Okefenokee Swamp, Ga., June 
1912.” 
