Manchester Memoirs, Vol. xlii. (1898), No. 11. 81 



"<^-. Abdomen beneath black," which will now be sub- 

 divided into : — 



Clypeus bimaculate ; the second and third cubital cel- 

 lules subequal. A. co7ifusa Sm. and A. fallax Sm. 



Clypeus immaculate ; second cubital cellule not one-half 

 the length of the third. A. cellular is. 



Head black, the vertex and front closely, but not 

 strongly, punctured ; the cheeks im punctuate ; the clypeus 

 with some large, widely separated, punctures ; the clypeus, 

 a somewhat triangular mark above it, the sides from a 

 little above the base of the antennae, dilated in the middle 

 to meet the upper mark, the labrum and the base of the 

 mandibles, yellow ; the mandibles piceous, intermixed 

 with black. The front and vertex and the outer orbits 

 thickly covered with long, griseous hair ; the clypeus 

 bearing a sparse pubescence ; the labrum fringed with long, 

 white hair. The scape of the antennae yellow beneath; 

 the flagellum brownish. The pro- and meso-notum 

 thickly covered with short, dark griseous hair ; the 

 scutelia with much longer white, the sides of the median 

 segment and the pleurae with long, white hair ; the 

 median segment closely punctured ; the pleurae are much 

 more strongly punctured ; the lower part of the meta- 

 pleurae obscurely longitudinally striated. The outer sides 

 of the tibiae and tarsi thickly covered with long, white 

 hair ; the metatarsus thickly covered on the inner side 

 with long, bright rufous hair ; the claws rufous. Wings 

 hyaline ; the stigma and nervures blackish ; the second 

 cubital cellule at top and bottom hardly one-half the 

 length of the third ; at the top it is half the length it 

 is at the bottom ; the first recurrent nervure is received 

 near the middle of the cellule ; the second distinctly in 

 front of the third transverse cubital nervure, and not 

 interstitial as it is with A. Jallax, &c. Abdomen shining, 



