190 THE CANADIAN ENTOMOLOGIST. 



half black, but no yellow ; interocellar region, and about base of antennge, 

 blackened ; labrum and lower corners of face yellow, the yellow extending 

 as a suffusion, with no defined margin, across the clypeus and half-way up 

 the sides of the face /antennae entirely bright ferruginous, the flagellum 

 stout ; mesothorax coarsely roughened, red, with a median black stripe, but 

 no yellow ; prothorax black or almost, with its upper border and the 

 tubercles yellow ; pleura red, with a large triangular yellow patch in front ; 

 area between the wings and the hind legs black ; metathorax red, with four 

 yellow spots, the lower ones large, the upper round and placed on the sides 

 of the enclosure, looking like eyes, the whole combination resembling a 

 picture of a skull somewhat ; tegulse red, shining but punctured ; wings 

 moderately dusky, the tips darker, stigma bright ferruginous, nervures 

 fuscous ; legs red, hind femora blackened behind, anterior and middle 

 femora with black behind at base ; abdomen minutely roughened, rather 

 shiny, red with broad yellow bands on segments 2 to 5, that on 5 inter- 

 rupted laterally ; first segment black basally, and with an obscure yellow 

 band, the middle third of which is wanting; fifth segment fringed with 

 silver-white hair ; pygidial plate broad shovel-shaped ; venter red, with a 

 large transverse pyriform yellow mark on each side of segments 2 and 3, 

 and two crescent-shaped yellow marks on 5. 



Milwaukee, Wisconsin, June 8, 1903. (Dr. S. Graenicher.) Looks 

 much like IV. Coloradensis, Ckll., but smaller, and differing in many 

 details. 



Nojnada sphaerogaster, Ckll., var. « . — ?. Length, about 8 mm.; 

 black, with lemon-yellow markings, and some red, but none on thorax ; 

 mandibles and anterior coxte simple ; basal nervure passing a short 

 distance basad of transverso-raedial ; third antennal joint a little shorter 

 than fourth. Head and thorax coarsely roughened, and quite hairy, the 

 dorsal hair tinged with fuscous ; head broad, facial quadrangle much 

 broader than long ; no yellow about head, cheeks entirely black ; labrum, 

 mandibles, malar region, broad anterior margin of clypeus, and a minute 

 inconspicuous stripe on each side of face adjacent to eye and small spot 

 at summit of eye, all ferruginous ; antennae entirely ferruginous, suffused 

 with blackish above, except the third joint ; upper border of prothorax, 

 most of tubercles, and two large confluent spots on scutellum, yellow ; the 

 rest of the thorax is black ; sides of metathoracic area with conspicuous 

 grooves ; legs black to about the middle of the femora (more behind), and 

 beyond thai red, the middle and hind tibiae with a blackish streak behind, 

 the knees inclined to be yellowish, the hind tibiae with a yellow stripe on 



