84 THE CANADIAN ENTOMOLOGIST. 
Virginia ; Illinois. This may be the male of dentipes, Brulle, the 
female of which is described as having a white annulus on antennæ, and: 
the tarsi are not conspicuously white as in a/ifarsis. 
4. HELCON FRIGIDUS. JV. Sp. 
© .—Black, shining ; face rough ; antennæ slender, black ; prothorax 
except posterior angles, semi-circular band on pleura, disk of meso- 
thorax and basal excavation of scutellum, covered with coarse striæ or 
reticulations ; metathorax coarsely reticulated ; tegulæ piceous ; wings. 
smoky hyaline, nervures and stigma black; legs, including coxæ, rufo- 
ferruginous, tarsi tinged with yellowish, posterior tibize blackish, femoral 
tooth strong and very blunt; abdomen longer than thorax, narrow,,. 
polished, ferruginous, dusky at base, first segment with two longitudinal 
ridges and a stout blunt tubercle on each side near base; ovipositor 
longer than body, honey-yellow, sheaths black. Length .45-.50 inch. 
Hudson’s Bay ; Vancouvers’ Island (Henry Edwards.) 
5. HELCON AMERICANUS. JV. Sp. 
@.—Black, shining; face roughened; prothorax and metathorax 
reticulated ; labrum and mandibles except tips ferruginous; palpi pale 
yellowish ; antennae long and slender, brown-black, base honey-yellow ; 
middle lobe of mesothorax prominent, divided from the side lobes by a 
deep groove which become confluent behind; tegulae and base of wings 
honey-yellow ; wings hyaline, sub-iridescent, nervures and stigma black 3. 
legs honey-yellow, posterior tibiae and tarsi more or less dusky, femora 
simple; abdomen long, slender, shining, sides and base of second and 
third segments tinged more or less with testaceous, first segment long, 
narrow, grooved medially ; venter more or less tinged with testaceous 3. 
ovipositor very long and slender. Length .55—.60 inch. 
Canada; Virginia. Very distinct from ÿ#/vipes by the shape and 
sculpture of the first abdominal segment. 
6. HELCON FULVIPES. 
Helcon fulvipes, Cress., Proc. Ent. Soc. Phil.,iv, p. 292. 9. 
Colorado. 
