THE CANADIAN ENTOMOLOGIST. 217 



1863 — Saund., Syii. Can. Arct., 4, Ardia. 



1864 — Pack., Proc. Ent. Soc, Phil, III., no, Platarctia. 



1868 — Saund.,* Can. Ent., L, 5, Platarctia. 



1869 — Bethune, Can. Ent., L, 45, Platarctia. 



187 1 — Saund.,* Can. Ent., III., 225, Platarctia. 



1872 — Lint.,* Ento. Contr., II., 132, Platarctia. 



americana % Wlk. 

 1855— Wlk., C. B. Mus. Lep. Het., III., 607, Ardia. 

 1868 — Grt. & Rob., Tr. Am. Ent. Soc, II., 71, pr. syn. 

 Habitat— Can., Lake Sup., White Mts., Vt., N. Y. • 



P. yarrowi Stretch. 



1873 — Str., Zyg. and Bomb., 221, pi. IX., f. 7, ^, Arctia. 



1876 — Str., Rept. Geog. Surv. West, 100 Mer., V., 800, pi. 40, ff. i 



and 2, Arctia. 

 1882 — Grt., New List, 15, Platarctia. 

 1883 — Moeschl., Stett, Ent. Zeit., 44, 116, Arctia. 

 Habitat — Labr., Arizona. 



Genus Euprepia Ochs. 



1 8 10 — Ochs., Schniett, III., 298. 



Von Heineman's characterization gives for this genus : — Antennae ^ 

 and % ciliated, joints with two stouter bristles; anterior tibia with claw 

 at tip. Primaries with accessory cell present. Based upon an examina- 

 tion of E. caja, the reference of that species to this genus is an error^ since 

 caja has the male antenntv pectinated, the fore tibia with but a small 

 spine at tip, primaries without accessory cell. In caja the tongue is 

 obsolete, palpi short, head retracted. All. the tibiae shorter than femora : 

 spurs normal, but minute. Claws simple. Primaries with 3, 4 and 5 

 nearly equidistant from the cross vein or end of median ; 6 from cross 

 vein, very little below end of subcostal ; 7, 8 and 9 on a long stalk out of 

 end of subcostal ; 10 from subcostal before the end of the cell ; second- 

 aries with 3, 4 and 5 nearly equidistant from end of median ; 6 and 7 

 together from end of subcostal. 



P?idica is said to be the type of the genus I 



E. caja Linn. 



1758 — Linn., Syst. Nat. Ed., X., 500, Bombyx. 

 \'](j-i — Linn., Syst. Nat. Ed., XII., 819, Bombyx. 



