1294 THE BUTTERFLIES OF NEW ENGLAND. 



Specimens are occasionally found in \vliicli there is a strong prevalence of bright, 

 grassy green, the body being tinged and streaked with it, especially on tlie wings, 

 the front of the ocellar prominences, the sides of the thorax, and a very broad baud on 

 the sides of the abdomen ; even the blackish markings are then tinged vyith green. 



Geographical distribution (26 : 8). This butterfly is more widely 

 distributed than any other of our swallow-tails, for it is found in nearly 

 every part of North America, from Atlantic to Pacific, from Newfoundland 

 to central Florida, and from Alaska to California. In the United States 

 it is probably wanting in the southern half of Florida (it has been taken as 

 far south as Indian River (Schwarz, Palmer), the Great Basin region and 

 southern California and (perhaps) the sea-coast of Alaska. It has been 

 occasionally taken in the eastern Rocky Mountains of Colorado. Whether 

 it penetrates into Mexico is unknown ; in British America it is evidently 

 found in all the district between Fort Yukon at the borders of Alaska to 

 Fort Simpson on the Mackenzie* and thence to the Athabasca region 

 (Geffcken), Lake Superior and all the settled parts of Canada, on one 

 side, and to the United States boundary on the other. It is found on the 

 lower Albany River at the southern extremity of Hudson Bay ( Doubleday ) , 

 but does not occur in any part of Labrador, first appearing on the north shore 

 of the St. Lawrence atGodbout River (Corneau), though it occurs in Anti- 

 costi (Couper), was found "extremely abundant" by Bell on the south 

 side of the Gulf of St. Lawrence between Cape Chat and Martin's River, 

 and extends to Newfoundland (Gosse) and Nova Scotia, though not 

 known at Cape Breton. That is, its northern limit in the eastern half of 

 North America closely follows the dividing line between the Canadian and 

 Hudsonian faunas, as laid down by Allen. 



In the Gulf States the dark form of the female occurs to the exclusion 

 of the yellow ; it prevails as for north as West Virginia and southern 

 Illinois ; a little further north it begins to be rapidly supplanted by the yel- 

 low female, but straggling specimens have been occasionally taken in the 

 east on Long Island (Graef), the vicinity of New York (Angus), Staten 

 Island (Davis), Newburgh (Edwards) and Poughkeepsie, N. Y. (Steven- 

 son),! New Jersey (Andrews), Delaware (Doubleday), and northern 

 Ohio (Foster) ; while the further west one goes, the further north it is 

 found. Thus Dr. Hoy has taken several specimens at Racine, Wis., one 

 at the mouth of the Wisconsin River, and one was taken by Allen in cen- 

 tral Iowa. At Omaha, Neb., the dark form prevails and is as numerous 

 as the other as far north as the Niobrara River (Bruner), while it haa 

 been found near Fort MacLeod in British territory (Lat. 50°) by Captain 



* The statement that it had been seen in instance mistaken for the dark female of J. 



numbers with the yellow form in the Adiron- glaucus. 



dacks of New York (Can. ent. xvi: 178 etc.) t It has latterly been brought by Dr. Daw- 

 has been followed to its source, and speci- sou from the Upper Liard River, 

 meus obtained. Papilio polyxenes was in this 



