NO. 1488. BUTTERFLIES OF BRITISH AMERICA— GARY. 435 



PONTIA OCCIDENTALIS CALYCE Edwards. 



A specimen taken by Mr. Preble at Fort Good Hope, June 21, 1904, 

 proves referable to the present form, and greatly extends its range 

 northward. 



SYNCHLOE AUSONIDES (Boisduval). 



This beautiful species is conmion throughout the region. In 1903, 1 

 tirst observed it on the Smith Portage, June 12, and secured fresh 

 examples at Fort Smith two days later. It was present at all localities 

 visited that season as far north as the Nahanni Mountains, and a fine 

 series was collected. Mr. Preble found it at Fort Good Hope, in 

 1904, and took two males. He observed it flying at Fort Simpson as 

 early as May 19. S. ausoiildes is usually found in open, grassy situa- 

 ations; occasionally in muskegs, but more often on higher ground. 



White records a Syncldoe which Richardson collected on the "Arctic 



Coast between lat. iSl^^ and 68-," in 1848, as '"''Anthocharls ? 



n. s. (near ^1. iiiiiiplonui)^ ^'' Richardson's specimens were doubtless 

 ausonidef<, as this species is the only one known to occur in the far 

 north. Doctor Fletcher records a specimen taken by Ogilvie on ' ' Mac- 

 kenzie River", July 8, 1888.* Under the name Etichloe simplonia 

 Butler records specimens of this species which Miss Elizabeth Tajdor 

 collected at the Rapids of the Drowned, Slave River, June 29, 1892.^ 

 E. simplonia is a European species. 



EURYMUS HECLA (Lefebvre). 



Elwes records four males and three females which were collected 

 b}^ David Hanbury on the Barren Grounds of eastern Mackenzie at 

 114'^ W., 6T'J 40' N. 'Arctic coast, in the vicinity of Point Epworth), 

 July 13 to 1(3, 1902.'' Mr. Preble captured a single male example at 

 Fort Good Hope, June 20, 1904. 



E. Jieda is strictly an Arctic species, and could not reasonably be 

 expected to occur in the heavy forest region of southern Mackenzie 

 and Athabaska. 



EURYMUS BOOTHII Curtis. 



This variable Arctic species, described from Boothia Felix, has been 

 taken in Mackenzie by but two explorers. 



White mentions specimens of this Initterfly collected by Richardson 

 in 1848 "on the Arctic Coast, between lat. 67^^ and 68^^."^ In 1902 



("Arctic Searching Expedition, II, 1851, p. 362. 



6 Ann. Rept. Can. Geol. Surv., Ill (new ser.), Pt. 1, App. IV, (1889), p. 231 B. 

 c Annals Nat. Hist. (6), XII, 1893, p. 14. 

 rf Trans. Ent. Soc. London, Pt. 3, 1903, p. 242. 

 « Arctic Searctiing Expedition, II, 1851, p. 362. 

 Proc. N. M. vol. xxxi— 06 29 



