NYMPIIALINAE : BKENTIIIS BELLOXA. 613 



tubercles pale ; spii-acles yellowish l^vown with fuscous lips ; ci'eniaster reddish 

 brown obscured Avith fuscous. Length, 14 mm. ; width at ocellar prominences, 2.(i 

 mm. ; at thorax, 4.5 mm. ; at third abdominal segment, 4.4 mm. ; lioiglit at thorax. 

 3. .5 mm. ; at third abdominal segment, '>.'^ mm. 



Geographical distribution (22:2). This butterfly occupies nearly 

 the same territory a.s B. myrina, and though not known from so far 

 north seeni.s more abundant in northern localities than its congener. 

 Like that species it has l)een reported by Boisduval and Lucas from 

 Cuba ; indeed Boi.sduval expressly says he has seen specimens from there, 

 and Geyer also gives this island as its home, but Gundlach has not dis- 

 covered it and analogy and its distribution in the United States render its 

 presence there altogether improbable ; nor do I knoAv any Cuban insect 

 which could have been mistaken for it. The southernmost localities 

 from which it is otherwise reported are Staten Island (Davis), Xew^ 

 Jersey (Andrews), Philadelphia "common" (Blake), Rockport (Kirt- 

 land) and Cleveland, Ohio "connnon" (Kirkpatrick) and northern Illinois 

 (Worthington) ; it is one of the commonest species in Wisconsin (Hoy), 

 It does not seem to be found so far east as Nova Scotia or New Bruns- 

 wick, but w^estward it extends to low^a "not uncommon" (Osborn, 

 Parker), Chippew^a (Brit. Mus.), Moose Factory, Hudson Bay (Weir), 

 Nepigon, Lake Superior (Fletcher), Lake Winnipeg (Scudder), Great 

 Slave Lake (Edwards*), Fort Ellis (Geddes), DufFerin (Dawson), and 

 the middle park of Colorado (Mead). Captain Geddes in travelling west 

 on the Canadian Pacific railroad noticed it in large numbers at Brandon, 

 a little more than a hundred miles west of Winnipeg, but found that 

 it grew continually rarer west of that, and at Calgary near the Rocky 

 Mountains was "quite rare." West of the Rocky ^Mountains it appears to 

 be replaced by B. epithore, a closely allied form, extending to California 

 and thought by some to be only a variety of this s])ecies. This enumer- 

 ation also includes some of its most northern localities, to Avhich may be 

 added Martin's Falls, Pludson Bay (Brit. Mus.). It is also more or less 

 common on the lower St. Lawrence, as far as the mouth of the Matap- 

 odan (Bell), and even to the Godbout River (Corneau), and occurs 

 throughout most of the settled parts of Canada; it has been reported, for 

 instance, at Quebec "rare" (Bowles, Fyles), Ottaw\a common (Fletcher), 

 Arundel (D'Urban) and opposite Lachine in the Chateauguay basin 

 (Jack), although it has not been found near by at Montreal (Caulfield, 

 Pearson). 



In NcAv England it seems to be as w^ell distributed and as common as 

 B. myrina, although it is elsew^here considered somewhat less abundant. 

 It must reach nearly or quite to New^ Brunswick, for it occurs on ]Mt. 



* Edwards does not give this locality in re- mens formerly so determineil as belonging to 

 cent lists, and perhaps now looks upon speci- B. epithore. 



