1865.] 105 



at tip, the first subniarginal cell much lonuer than the two following, 

 Fig. 2, 9 • the second triangular, petiolated, and receiving the 

 first recurrent nervure before the middle, the third 

 submarginal very large, subquangular, the tip ex- 

 ceeding that of the marginal, the second recurrent nervure uniting 

 with the second transverse cubital nervure (see Fig. 2) ; the Z has the 

 marginal rather shorter, subtriangular, especially at base, truncate or 

 subtruncate at tip. the posterior nervure descending in a gradual curve, 

 and the inferior edge in an angle, to meet the superior angle of the 

 second submarginal cell, which is triangular and oblique, receiving the 

 ^ig- 3, % . first recurrent nervure before the middle ; the second 

 recurrent nervure either unites with the second 

 transverse cubital nervure, or is received near to the 

 base of the third submarginal cell which is shaped much as in the 9 , 

 but varying in being a trifle shorter and more quadrate (see Fig. 3). 

 Legs stout, rather strongly spinose, the posterior tibicB serrate, the an- 

 terior tarsi ciliated exteriorly, but not strongly so. Abdomen as in 



This genus is much more closely related to Cerreris than to Philan- 

 thus, to which the two described species have been referred ; it diifers 

 from the former genus especially in the neuration of the anterior wings, 

 which, however, shows a remarkable difl^erence in the male and female. 



1. Eucerceris zonatus, Say. 



Philanthus zonatus, Say, West. Quar. Eep. ii, p. 79; Amer. Entora. plate 49. 

 Black ; face, line between antennae, collar, two spots on scutellum, line on 

 postseutellum, two marks on metatliorax, and bands on abdomen, the first two 

 broad, the others narrow, yellow ; base of antennae, and legs honey-yellow : 

 wings fuscous, violaceous, costa darker beyond the base: tegulse and legs 

 honey-yellow. * 



Femulc. — Black, opaque, densely and deeply punctured, clothed with 

 a very short indistinct golden pile; the head large, very broad and 

 transverse, the face flattened, the lower part very wide, longitudinally 

 prominent between the antennae; a large triangular mark on each side 

 of the fVice, the clypeus except the extreme apical margin, and a longi- 

 tudinal mark between the antennae, yellowish ; lateral lobes of the cly- 

 peus a little concave, the central lobe sparsely punctured and shining; 

 most of the cheeks and occiput obscure ferruginous; mandibles polished, 

 reddish-brown, black at tip, with a large, triangular, obtuse, black- 

 tipped tooth above near the base ; antennae slender, the basal half pale 

 rufous, the apical half black. Thorax : sides of the prothorax carinate, 

 the posterior margin yellow ; scutellum dull ferruginous, with a yellow- 



