. Insects . urtis, male. (Bernard harbour, Northwest Territories). 2. Eurymus boothi Curtis, male. (Bernard harbour, Northwest Territories). 3. Oeneis brucei yukonensis Gibson, type, male. (Klutlan glacier, Yukon Territory). 4. Oeneis semidea arctica Gibson, type, male. (Bernard harbour, Northwest Territories). Genitalia of this specimen shown on Plate I, fig. 4. 5. Oeneis peartice Edw., female. (Bernard harbour. Northwest Territories). 6. Oeneis cairnesi Gibson, type, male. (White river district, Yukon Territory). 7. Erebia fasciata Butler, female. (Lat. 65° 10 long. 141°). 8. Erebia fasciata


. Insects . urtis, male. (Bernard harbour, Northwest Territories). 2. Eurymus boothi Curtis, male. (Bernard harbour, Northwest Territories). 3. Oeneis brucei yukonensis Gibson, type, male. (Klutlan glacier, Yukon Territory). 4. Oeneis semidea arctica Gibson, type, male. (Bernard harbour, Northwest Territories). Genitalia of this specimen shown on Plate I, fig. 4. 5. Oeneis peartice Edw., female. (Bernard harbour. Northwest Territories). 6. Oeneis cairnesi Gibson, type, male. (White river district, Yukon Territory). 7. Erebia fasciata Butler, female. (Lat. 65° 10 long. 141°). 8. Erebia fasciata Butler, male. (Armstrong point, Victoria island. Northwest Territories). 9. Erebia rossi Curtis, female. (Wollaston Land, Victoria island, Northwest Territories). 10. Erebia youngi Holl., male. (Siwash creek, Yukon Territory). 11. Erebia sofia Stkr., male. (White river district, Yukon Territory). 12. Brenthis dislincta Gibson, type, female. (Harrington creek, Yukon Territory). (All natural size). PLATE IV.


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Keywords: ., bookcentury1900, bookdecade1910, bookidinsects00can, bookyear1919