52 i • Canadian Arctic Expedition, 1918-18 



Plate III. 

 Fig. 1. Pieris napi pseudobryonice Verity, male. (Bartlett bay, Alaska). 



2. Pieris napi pseudobryonice Verity, female. (Bartlett bay, Alaska). 



3. Pieris napi arctica Verity, female. (Bet. lat, 67° 25' and 66° 30'; long. 141°). 



4. Pieris napi arctica Verity, male, underside. (Nansen creek, Yukon Territory). 



5. Erehia sofia Stkr., female, underside. (Harrington creek, Yukon Territory). 



6. Brenthis natazhati Gibson, type, male, underside. (Long. 141°, north of mount 



Natazhat) . 



7. Euchloe creusa Dbldy., chrysalis, (Departure bay, British Columbia). 



8. Hyphoraia alpina Quens., cocoon. (Collinson point, Alaska). 



9. Gynaephora rossi Curtis, larva. (Collinson point, Alaska). 



10. Hyphoraia. alpina Quens., cremaster, X 9. (Collinson point, Alaska). 



11. Hyphoraia f estiva Bork., cremaster, X 9. (Bernard harbour, Northwest Territories). 



12. Brenthis natazhati Gibson, female. (Bernard harbour, Northwest Territories). 



13. Autographa altera Ottol.? male. (Bernard harbour, Northwest Territories). 



14. Autographa sackeni Ottol.? male. (Mayo lake, Yukon Territory). 



15. Plebeius scudderi Edw., male. (Wept side of Kluane lake, Yukon Territory). 



16. Plebeius aquilo Bdv.?, male. (Burwash creek, Yukon Territory). 



17. Plebeius aquilo Bdv.?, male. (Kluane, Yukon Territory). 



18. Plebeius aquilo Bdv., male. (Bernard harbour, Northwest Territories). 



(All natural size). 



6.5994—5 



