Production of Mimetic Reseiiiblanccs among Butterflies. 379 



45. Accipiter fuscus, Gm, (Sharp-shinned Hawk). Sto- 



machs contained " many of the larger Papilionidae 

 and Sphingidae " : Gentry, I. c. ii, p. 240. 



46. Accipiter coopcri, Bonap. (Cooper's Hawk). Stomachs 



contained Papilionidae : Gentry, /. c. ii, p. 235. 



47. Birds not identified : — 



(a) " I have on several occasions seen butterflies 

 captured by birds and have seen dragon-flies dart 

 after them " : C. V. Riley " 3rd Missouri Report," 

 1871, p. 167.— (&) "Mr. Otto Lugger of Chicago, 

 while on the U. S. Lake Survey, once saw a bird 

 dart after an archippus [ = plexippus] butterfly, 

 seize it and immediately drop it without devouring 

 the body " : C. V. Riley," I. c. p. 169, note.— (c) " But 

 butterflies are certainly sometimes eaten with us, for 

 several cases are on record where capture has been 

 seen, and I have myself noted one instance where 

 Euphoeades troilus was unquestionably captured at no 

 great distance from me by a bird. . . . Nearly all the 

 prominent instances that have been mentioned have 

 been taken from the tropics, where I have no doubt 

 the perfect butterflies form a not inconsiderable por- 

 tion of the food of many birds": S. H. Scudder, 

 " Butterflies of Eastern U. S. and Canada," p. 1612.— 

 {d) " T'urniis \_= Papilio glaucus, L.] has many- 

 enemies, birds and dragonflies by day, and probably 

 small owls and others by night " : Edwards, quoted 

 by Scudder, /. c. ii, p. 1303. 



Ne ARCTIC Butterflies. 

 Danainae. 



Anosia plexippus, L. — Bird (47, h; butterfly rejected). 



Satyrinae. 



Oeneisjutta, Hiibn. — Tyrannus tyrannus (32, d). 

 Satyrinae. — Pyranga rubra (10, &) ; Contopus virens 

 (85, h) ; Empidonax acadicus (36, a) ; Chordeiles vir- 

 ginianus (37). 



Nymphalinae. 



Argynnis spp. — Stelgidopter_yx serripennis (16). 



A. apjhrodite, F. — Chordeiles vii-ginianus (37) ; Chaetura 



pelagica (38). 

 A. cyhcle, F. — Carduelis carduehs (26). 

 cc 2 



