172 THE CANADIAN ENTOMOLOGIST. 



Head (cephalic aspect) rounded triangular, longer than wide, not 

 lenticular, the facial impression weak, bounded by the antennal scrobes 

 which form a rounded tiiangular impression, surrounding on two sides the 

 raised cuneate disk of the facial impression ; the apex of the scrobes 

 obtuse, reaching to a point midway between the eyes (cephalic aspect) ; 

 the whole of the cephalic aspect of the head and the vertex closely, but 

 not very coarsely, punctured, the surface slightly less rough than the eye 

 surface ; ocelli in an almost equilateral triangle, the lateral ones slightly 

 farther apart from each other than each is from the cephalic ocellus, and 

 close to, but not touching, the eye margin, and still farther from the 

 occiputal margin; eyes large, round, prominent on the dorso-lateral aspect 

 of the vertex, and prominent from both dorsal and cephalic aspects, some- 

 what convergent from dorsal aspect, and from lateral aspect not as long 

 as the cheeks or malar space, regularly convex, lenticular, and reaching 

 caudad to the convexed, acute occipital margin ; from dorsal aspect 

 vertex an inclined plane; the occipital foraminal depression almost acutely 

 concave ; face with some sparse grayish hairs ; antennae inserted far below 

 the middle of the face, the scape with a large leaf-like dilation ventrad, the 

 pedicel longer than the first funicle joint, the funicle 6-jointed, white, 

 annulate with black at the first joint, cylindrical and slightly clavate, the 

 club 3-jointed, white, ovate and distinctly wider than the funicle, but not 

 more than one-half as long ; flagcllum on the whole cylindrical, subcapi- 

 tate. Dorsal aspect of the surface of the thorax similar in sculpture to 

 that of the head, the pro- and mesonotum with scattered, short, stiff, 

 recumbent white hairs, hispid (Coddington lens, half-inch), the hairs 

 apparently not arising from shallow, larger punctures ; axillae meeting at 

 the meson, cuneate ; along the median line scutellum somewhat longer 

 than the mesoscutum, peltate, its cephalic margins oblique from the side 

 to the meson, cephalo-mesad ; caudal margin of the mesoscutum straight 

 or very slightly convex ; dorso-lateral aspect of the mesopostscutellum 

 and the metanotum bare, that of the former finely, obliquely corrugated. 



Abdomen short, only about two-thirds the length of the thorax, ovate, 

 its dorsum concave and not clothed with stift pubescence, the spiracle of 

 the third segment dorsal, at the lateral margin prominent, fuscous, 

 margined and guarded by about three long black setJB ; hypopygium 

 prominent, plowshare-shaped, extending distinctly beyond the abdomen. 

 Legs normal, the middle tibial spur short and stout, not as long as the 

 bisal tarsal joint, which is by far the longest of the joints of the inter- 

 mediate tarsi, the others relatively small ; the bristles on the intermediate 



