1917] A Synopsis of Eumenidce 355 



Female. — Length, 15 mm.; wing, 11.5 mm. Clypeus convex, 

 lateral angles two-thirds distance from base to apex, apical emargination 

 rounded, surface coarsely punctate; head convex above; thorax convex 

 before tegulae; propodeum with median furrow deep, extending to the 

 metanotum; petiole little more than one-third as wide as long, at first 

 linear then gradually becoming pyriform, widest at apical margin, 

 lateral teeth not visible dorsally, apical margin bordered by a salient 

 cordon before which is a slight constriction; second segment of the gaster 

 convex, not depressed, more finely punctate than the petiole. .Black; 

 wide basal margin of the clypeus extending forward along the sides, 

 ridge between the antennae, anterior aspect of the scape, a post-ocular 

 line, anterior margin of the prothorax, metanotum, a spot on either side 

 of the metanotum on the propodeum, apical margins both dorsal and 

 ventral of the first and second segments of the gaster, dorsal margin of 

 third and fourth segments, an oblique spot on either side of the second 

 segment, a line on the lateral aspect of the tibiae most prominent on 

 the median pair, yellowish- white ; ends of tibiae and tarsi, piccus; outer 

 margins of tcgulee brownish; wings brownish with violet reflections. 

 Body covered with short,' grayish pile. 



Male. — Length, 12.5 mm. ; wing, 10 mm. More slender than female. 

 Clypeus widely divergent apically. Clypeus entirely and nearly all of 

 tibiae, yellowish- whi te ; hook of antennae brown; no spots on the pro- 

 podeum. Otherwise as female. 



Variations. — This species varies considerably in size, in the depth 

 of tte furrow of the propodeum, in the prominence of the lateral teeth 

 of the petiole, which may be observed on a few specimens when viewed 

 dorsally, and in the density and depth of punctation. The markings 

 vary in prominence, particularly in males which frequently have a 

 line on the margin of the fifth segment of the gaster, and more of the 

 legs yellowish- white. There are two varieties with somewhat different 

 markings, which are as follows: 



Variety 1. Resembles the typical fraterniis, except as follows: 

 Length, 1G.5 mm.; wing, 12.5 mm. Melanistic. No yellowish white 

 on clypeus nor on legs except for a small mark on median tibae, nor on 

 third and fourth segments of the gaster. There is a large yellowish- 

 white spot below the tegul«. 



Variety 2. Resembles the typical fraternus, except as follows: 

 A spot below the tegulae, spots on the propodeum very large, a dot on 

 either side of the petiole, and apical margins of all segments of the 

 gaster 1 to 5, yellowish white. Because of these variations in markings 

 this variety might be confused with verticalis, but it differs in all struc- 

 tural characters. In the National Museum are only three specimens so 

 marked. 



Distribution. — The writer has seen specimens of the typical 

 fraternus, most of which are in the National Museum, from 

 the following localities: Durham, Stafford Co., N. H.; Forest 

 Hills and Boston, Mass.; Lake George, Warren Co., and Long 

 Island, N. Y. ; Carlisle Junction, Craighead and Eberly Mills, 



