THE MOUNT DESERT REGIOX 181 



Order LEPIDOPTERA. (Macrolepidoptera) 



Papilionidae 

 Papiuo Linnaeus 



P. AJAX Linn. (4). The Black Swallow-tail. From June to 

 August. The larva feeds on the wild and cultivated Umh el- 

 lifer ae including carrot, parsnip, parsley, celery, etc. Has 

 decreased in numbers during the past ten years. 



P. GLAUCus form turnus Linn. (15). Tiger or Yellow Swallow- 

 tail. Common in June and early July. The larva feeds on 

 a variety of plants, including cherry, apple, quince, ash, 

 birch, alder, poplar, etc. There was a tremendous hatch in 

 June, 1935 on the Island and I saw more individuals in one 

 week than in the entire fifteen years before. 



CoLiAS Fabricius 

 C. EURYTHEME Bdv. form KEEWAYDIN Edw. (41). 



C. EURYTHEME Bdv. (41). Orange Sulpliur-butterfly. A west- 

 ern species that is occasionally found in New England. Mr. 

 Scudder on the distribution of this species in his "Butter- 

 flies of New England," says: "Mt. Desert, Me., a single 

 specimen seen (Thaxter)." Again on page 1132, he says: 

 *'Mr. Thaxter was attracted to the specimen which he took 

 at Mt. Desert by the orange color of the wings, and says 

 the butterfly was apparently dancing in nuptial pas de deux 

 with a companion; they twirled high into the air beyond 

 reach, but soon separated and came to earth again, when 

 one was captured." 



C. EURYTHEME Bdv. form ARIADNE Edw. (41). 



C. PHiLODicE Godt. (42), Clouded Sulphur-butterfly. Common, 

 July-Sept. The larva feeds on a number of the Legumi- 

 nosae, but prefers the clovers. 



C. INTERIOR Scud. (45). Pink-edged Sulphur-butterfly. Some- 

 times quite common throughout the Island in July. The 

 albino taken at S. W. Harbor, July 24 (Br.). 



