94 



U. S. NATIONAL MUSEUM BULLETIN 209 



This species occurs in the Alleghenian and CaroHnian faunas and 

 there are a few scattered records for the Rockj^ Mountains, The 

 habitat is the undergrowth of woods. Adults are commonest in 

 July and August. 



2. Priocnemis (Priocnemis) scitula (Cresson) 



Male: Fore wing 3.5 to 5 mm. long; frons subpolished, with rather 

 shallow punctures separated by about 0.7 their diameter; median 

 third of sixth sternite with a pair of faintly raised, small apical mounds; 

 exposed part of subgenital plate tongue-shaped, about 1.3 as long as 

 wide, covered with short oblique hairs; mandible largely rufous; 

 wings h3^aline, the apical third of the fore wing faintly infuscate. 



Female: Forewing 4.5 to 6 mm. long; frons subpolished, its punc- 

 tures separated by about 0.3 their diameter. Mandible largely 

 rufous; wings subhyaline, the fore^ving with a faint infuscation along 

 the basal vein and its apical third moderately infuscate, with a con- 

 spicuous hyaline area covering the basal 0.7 of the fourth cubital 

 cell (pi. 2, fig. 23) ; apex of hind wing faintly infuscate. 



There are two weakly differentiated subspecies, a northern one 

 (relicta) with the body and legs almost entirely black and a southern 

 one (scitula) with the body and legs largely fulvous. Their colorations 

 and distributions are described below. 



2a. Priocnemis {Priocnemis) scitula relicta Banks 



Priocnemis relicta Banks, 1912, Canadian Ent., vol. 44, p. 198, [ ? ]. Lectotype: 

 9 , Sea Cliff, N. Y., Sept. 5 to 10, N. Banks (Cambridge). 



Ageniella tenella Banks, 1915, Canadian Ent., vol. 47, p. 400, cf . Lectotype: 

 d", Niagara Falls, N. Y., July 31, 1910, M. C. Van Duzee (Cambridge). 



Male: Black. Legs with a variable amount of fulvous, this cover- 

 ing at least the front tarsus and front tibia (which is infuscate above), 



Figure 44. — Localities for Priocnemis scitula relicta. 



