10 



PAPILIO Linn. 

 P. brevicauda Saund. Common along both shores of the Lower St. Lawrence, Perce (Coup); 



Godbout River VI (Coup); Metis VII-VIII (W); Bic, Kamouraska (W); food plants: 



archangelica, water hemlock, parsley. 

 P. polyxenes Fabr. Throughout the Province west of Quebec City, which appears to be 



about the boundary between this insect and the foregoing, Levis (Fy); East Bolton VII 



(W); St. Hilaire V (W); Montreal V-IX (W); Hudson V (Ch); Grenville V (D'U), Aylmer 



(F); food plants: parsley, carrot, celery. Two or more broods in a season. 

 P. thoas Linn. Occurrence in the Province very occasional, recorded only from Chateauguay 



VIII (Jack); and none have been seen recently; food plant : prickly ash; in the south, orange, 



the larva being known as the " Orange Dog." 

 P. turnus Linn. Throughout the Province, Tadousac VII (Sa); Metis VII (W); Godbout 



River (Coup); Quebec VI (Fy); Phillipsburg VI (W); St. Hilaire V-VI (W); Montreal 



V-VI (W); Shawbridge VI (W); St. Adele VI (W); Rouge River VI (D'U); food plants: 



cherry, willow, apple, thorn, bass, oak, plum. 



Family PIERIDAE 



This family includes the cabbage butterflies, or " whites " which are most serious pestp 

 of the cabbage, and the Sulphur butterfly which reduces yearly the clover crops by a large 

 percentage. The three pairs of legs are all developed, the colour of wings is either white, 

 yellow or orange. The caterpillars are usually green and smooth, without processes or spines, 

 the chrysalids suspended in the same manner as in the Papilionidae. 



PIERIS Schrank 

 P. napi Linn. (Oleracea Bdv.) Appears to be becoming scarcer than formerly, but found 



throughout the Province, and more generally at edges of woods than in open fields, Metis 



VII-VIII (W); Rimouski (Gb); Montreal V-IX (W); St. Hilaire V (C); Windsor Mills 



VII (R); East Bolton VII (W); Lost River VI (Gb); Montford VI (W); Vaudreuil V (S); 



food plants: cruciferae. 

 P. protodice Bdv. Taken many years ago at Lachine by Dr. Barnston, but has not been 



recorded recently in the Province, though two specimens were taken at Ottawa in 1905; 



food plant: cabbage, etc. 

 P. rapae Linn. Common everywhere May to October. The imported white butterfly; food 



plants: cabbage, nasturtium, mignonette. 



var. immaculata. Skin, and Aaron, common in spring, the black spots being very faint. 



var. nov angliae Scud. Occurs occasionally. This variety has the ground colour of wings.. 



lemon yellow instead of white. 



Fig. 2. 

 Pierig rapae, male. 



Fig. 3. 

 Fieri* rapae, female. 



