444 ANNUAL REPORT SMITHSONIAN INSTITUTION, 1926 
Presumably in the other butterflies in which the females have a 
disagreeable odor absent from or weaker in the males that odor is 
more or less protective. But it is by no means a complete protec- 
tion, for certain mice commit great havoc in the wintering swarms 
of our milkweed butterfly (Danaus archippus), while in Africa and 
Asia certain of its relatives are freely preyed upon by other creatures, 
especially by certain kinds of mantises. 
EXPLANATION OF PLATES 
PLATE 1 
Fie. 1—The common cabbage butterfly (Pieris rape); the specimen is from 
Newtonville, Mass. 
Fie, 2.—The green-veined white (Pieris napi) ; the specimen was caught by the 
author at Interlaken, Switzerland. 
Fic. 8.—The clouded sulphur (Hurymus hyale), male, from Interlaken, Switzer- 
land. 
Fic. 4—The clouded sulphur (Hurymus hyale), female, from Interlaken, Switzer- 
land. 
Fic. 5.—Hurymus eurytheme, male from Ipswich, Mass., August 25, 1925. 
Fic. 6.—The large white (Pieris brassice), Interlaken, Switzerland. 
Fig. 7.—The common sulphur (Hurymus philodice), male, Newtonville, Mass. 
Fic. 8—Eurymus eurytheme, female, Washington, D. C., September 19, 1925. 
Fic. 9—Hurymus eurytheme, white female, Washington, D. C., September 19, 
1925. 
PLATE 2 
Fig. 10.—The falcate orange tip (Anthocharis genutia), male, from Washington, 
D. C., April 18, 1925. 
Fic, 11—The falcate orange tip (Anthocharis genutia), female, from Washing- 
ton, D. C., April 19, 1925. 
Fic. 12.—Metura cipris, male, Brazil. 
Fic. 13.—The lesser sulphur (Eurema euterpe), male. 
Fig. 14.—Catopsilia eubule, male. 
Fic. 15.—Rhabdodryas trite, male, Brazil. 
Fic. 16.—Hurymus phicomone, female; the specimen was caught by the author 
at Chamonix, France, 
PLATE 3 
Fig. 17.—The clouded yellow (Hurymus edusa), male, from Interlaken, Switzer- 
land. 
Fic. 18.—The clouded yellow (Hurymus edusa), female, from Interlaken 
Switzerland. 
Fic. 19.—The clouded yellow (Hurymus edusa), white female, from Interlaken, 
Switzerland. 
Fic. 20.—The common sulphur (Hurymus philodice), white female, Newtonville, 
Mass. 
Fic. 21—The common sulphur (Hurymus philodice), white female, Newtonville, 
Mass. 
Fig. 22.—Dismorphia nemesis, male, South America. 
Fic. 23.—Dismorphia melite, male, South America. 
Fic. 24.—Danaus chrysippus, male, from Kilossa, Tanganyika Territory ; caught 
by Arthur J. Loveridge, January 15, 1921. 
Fie. 25.—The American peacock butterfly (Junonia cenia), female, Washington, 
D. C., September 19, 1925. 
