172 THE CANADIAN ENTOMOLOGIST. 



cision for the insertion of the antennae ; facets large, globose ; antennae 

 long, reaching the end of the metathorax, inserted in a longer socket, 15- 

 jointed ; ist joint a little thicker, cyHndrical, half as broad as long; 2nd 

 as long as broad ; all others obclavate, to three times longer than broad, 

 but the 3rd to 5th a little shorter than the rest, the last one more ovoid, 

 with tip rounded; there seems not to be wanting any joint more. Labrum 

 large, rounded, a little darker in middle ; max. palpi 5-jointed, the three 

 basals alike, short, as broad as long ; 4th a little longer, 5th longer, ovoid; 

 labial palpi 3-jointed, apical joint longer, ovoid. Prothorax as broad as 

 occiput, about quadrangular, broader near the mesothorax ; a deep trans- 

 versal sulcus a little before middle, where the sides are notched ; legs as 

 usual, femoral and basal joint of fore legs elongate-inflated ; middle legs 

 less strong. 



Wings very little longer than the abdomen, narrow, ^ mill, broad, four 

 times longer than broad, rounded on tip, hairy around and on the mem- 

 brane, which is rugose, smoky, with four white longitudinal bands, the 

 fifth near the costa being almost obsolete. Subcosta dark, ending uncon- 

 nected after the basal fourth of the wing ; a little earlier in the hind wings. 

 Radius a little before the tip of the wing connected below with 

 one long vein, which runs parallel to the radius and ends on the tip. 

 This vein represents the sector and its upper branch (McLachl.) ; the 

 sector itself is wanting from the place where the upper branch originates 

 (it is marked by a small break of the vein) to the tip. There is no other 

 vein in the wing except the strong anal vein originating from the base of 

 the sector shortly before a transversal between the sector and radius. I 

 have for convenience always used McLachlan's names of the veins, though 

 it is obvious by this species that what he calls upper branch is really the 

 prolongation of the sector itself. I will try later to give a homology of 

 all the veins of the wing. The hind wings have exactly the same very 

 simple venation ; the discoidal cell is open. The abdomen is not entirely 

 visible from above, as a Hymenopterous insect, partly overlaying. The 

 segments are equal, once broader than long, except the two last ones, 

 which are considerably shorter ; the apical margin of the last one is cut 

 asymmetrically, the right half of it considerably shorter than the left side ; 

 appendages as long as the four last segments, stout, two-jointed ; the 

 apical joints cylindrical, rounded at tip, as long as the basal ones ; the 

 appendages are asymmetrical, the right one stout, straight, a little longer, 

 the left one curvated, a little thinner. No side-view is possible. Between 



