298 THE BUTTERFLIES OF NEW ENGLAND. 



■whitish or sordid butt", the anterior segments more or less whitish and an infrastigma. 

 tal stripe pink, excepting on tlie last segments where it is white, the mammiform pro- 

 tuberances and transverse ridges, especially the latter, olive, the ridges beset with 

 blue lenticular or subconical papillae. Longer tubercles of second thoracic segment 

 amber, of sixth and seventh abdominal segments black. Legs and prolegs red-brown. 

 Length 30 mm. (Colors mostly after Edwards.) 



Chrysalis (83 : U, 23). Ocellar tubercles less prominent than in B. archippus, and 

 dorsal surface of eighth abdominal segment less rugulose, the roughnesses more 

 smoothed. Color varying from a creamy Avhite to silvery gray, excepting along the 

 upper and hind margins of wings, which vary from dark brown to greenish, and the 

 dorsal prominence of the second abdominal segment, which is fuliginous but separ- 

 ated from the wing-cases by a band of silvery gray. Abdomen yellow white, the 

 terminal segments and whole ventral surface excepting a ventral line grayish brown, 

 and a dorsal and obscure suprastigmatal stripe of brown. Length, 21-25 mm. 



Distribution. This species of Basilarchia has a veiy clifFerent range 

 from the others, its southern limits nearly coinciding with the northern 

 boundaries of B. asiyanax. It is par excellence a Canadian species, in- 

 habitino- the whole width of the Dominion east of the Rocky Mountains 

 and extending far north into unexplored regions. The following are some 

 of the localities where it has been found north of our boundary, passing 

 from east westward : Nova Scotia, "quite common in particular localities," 

 (Jones) and at Parrsboro (Mrs. Heustis) ; Cape Breton (Thaxter) : 

 Newfoundland (Edwards) ; Godbout River on the northern shore of the Gulf 

 of St. Lawrence (Corneau) ; on the southern side of the same Gulf in the 

 River Rouge District (D'Urban) , at St. Anne and Marsoime Rivers (Bell) , 

 Quebec " not uncommon " (Bowles, Fyles) ; Montreal " not abundant " 

 Caulfield) ; Sherbrooke (Gosse) ; Chateauquay (Pearson) ; Ottawa 

 (Fletcher) ; York County, London, and Hamilton, Ontario (Brodie, Saun- 

 ders, Murray (Moffatt) ; Moose Factory, Hudson Bay (Weir) ; Lake of the 

 Woods (Say, Dawson) and Dufferin (Dawson) ; Lake Winnipeg (Say), 

 mouth of the Saskatchewan (Scudder) ; Athabasca region (GefFcken) ; 

 Fort Simpson (Edwards) ; McKenzie and Slave River <^ Richardson) ; 

 Devil's Portage, Liard River (Dawson fide Fletcher). The last locali- 

 ties carry it to the Rocky Mountains in the high north, but there is no 

 other authentic record of its reaching so far west at a more southern 

 latitude, excepting that it was taken by Tyrrell, at Red Deer River, lati- 

 tude, 52 N., longitude, 114° 20' W. ; unless Captain Geddes, who vaguely 

 reports it from the "Northwest Territory" (by which he means all the 

 Canadian possessions between Winnipeg and the Rocky Mountains) has 

 found it there ; or unless also Reakirt's statement is correct that he has 

 specimens from Colorado, from which state no one has since brought 

 it. Strecker, however, credits it as extending to the Pacific, but with 

 no specific statements of localities. Mr. Fletcher informs me that there 

 is a specimen in Geddes's collection marked California. It has not been re- 

 ported from Labrador or Alaska. Within our own country it has been 

 found — passing now from west, eastward — in the "Arkansas" of 1820, 



