182 BIOLOGICAL SURVEY OF 



EiTREMA Hubner 



E. LISA B. & L. (72). Little Sulphur-butterfly. ''One in ex- 

 cellent condition was taken on Mt. Desert, Me., by Mr. 

 Eoland Tliaxter in August, 1880" (Scudder). Bar Harbor, 

 Sept. 3, 1934 (Br.). 



PiEBis Schrauk 



P. NAPi Linn. gen. vern. oleracea Harr. (83d). White Mustard- 

 butterfly. Rare. Near Newport Mt. (Reich and Burton). 

 Formerly common throughout northern New England, but 

 since the introduction of Pieris rapae, it has become com- 

 paratively scarce, probably owing to parasites. The larva 

 feeds on mustard, cabbage, turnip, and other Cruciferae. 



P. RAPAE Linn. (86). Imported Cabbage-butterfly. Common. 

 Litroduced at Quebec about 1860, it reached Mt. Desert 

 about 1868. The larva feeds chiefly on cabbage, but will 

 also feed on most of the Cruciferae, including turnip, mus- 

 tard, horse radish, water-cress, etc. It is usually kept in 

 check by parasites. 



Danaidae 



Danaus Kluk 



D. plexippus Linn. (89). The Monarch. S. W. Harbor, July, 

 1918 ; east of Champlain Mt., 1924 (Burton). It is probably 

 only an occasional visitor during its northern migration. 

 In the absence of milkweed (Asclepias), the larva could 

 probably feed on dogbane {Apocynum) . Bar Harbor, Aug. 

 2 (Br.). On Sept. 23, '33 there were about sixty individuals 

 feeding on purple aster at Sea Wall. 



Satyridae 

 Enodia Hubner 



E. portlandia Fab. (96). The Pearl-eyed Nymph. Local in 

 its distribution, wood near the Sieur de Monts Spring; 

 Eden, July 18-24. The larva feeds on grasses. A pupa 

 taken at Bubble Brook July 12, '36 hatched an Amhlyteles 

 n.sp. One taken at Corfield July 7 was not normally marked 

 on the secondaries and approaches the southern form. 



