Production of Mimetic Resemhlances among Butterflies. 355 



ing, but also saw another actually pursuing a butter- 

 fly belonging to the genus Acraea " : W. L. Distant, 

 " Naturalist in the Transvaal," p. 70. — (b) Seen to 

 "take moths and P. [Pieris] hellica" : J. P. Mansel 

 Weale, " Nature," iii, p. 508 (Cape Colony). 



2. Motacilla sp. (Wagtail). Prof. Yngve Sjostedt, of Stock- 



holm, informs me that although he paid no special 

 attention to this subject, he well remembers to have 

 observed birds of this genus pursuing and capturing 

 butterflies in the beds of rivers on the Cameroon 

 Mountain in West Africa. 



3. Nectcirinia sp. (Sunbird). " Mrs. Barber informs me 



that Pyrameis cardui is a frequent victim among the 

 butterflies with which the Sunbirds {Nectariniae) 

 feed their young" : R. Trimen, " S. Afr. Butterf.," i, p. 

 34, note (Cajae Colony). 



4. Ajmlis thoracica, Shaw (Bar-throated Warbler). On 



June 7, 1903, near Salisbury, Rhodesia, I myself saw 

 one of those birds catch an Acraea nohara-halali, 

 Mshl., which it ate with apparent relish. 



5. Pratincola toi^qvata, L. (South African Stonechat). " In 



March [1900] I saw a Pratincola torquata in chase of 

 Tarticus jiliniiis" : C. F. M. Swynnerton, Trans. Eut. 

 Soc. Lond., 1902, p. 358 (Gazaland). 



6. Lanius collaris, L. (Fiskal Shrike). "At the Cape I 



have seen Fiscus collaris, the common shrike of the 

 colony, seize in succession several Pcqnlio lyaeus on 

 the wing" : R. Trimen, Proc. Ent. Soc, 1897, p. xci. 



7. Bradyornis mariquc7isis, Sm. (Marico Wood-Shrike). 



" Feb. 27, 1898. Saw a Marico wood-shrike dart down 

 from a tree and catch a Sarangcsa climinata, Holl., 

 which was sitting with outspread wings on a small 

 plant" : G. A. K. Marshall, Tr. Ent. Soc. 1902, p. 357 

 (Rhodesia). 



8. Pachyprora molitor, Hahn and K. (White-flanked Fly- 



catcher), (a) " March 6, 1898. Saw a flycatcher 

 {Pachyprora molitor) make several futile attempts to 

 catch a Tarucus p)^inius, which was circling round 

 the bush on which it sat." G. A. K. Marshall, I. c. 

 p. 357 (Rhodesia).— (6) On June 7, 1903, near Salis- 

 bury, Rhodesia, I saw one of these birds eat a small 

 Lycaenid (probably Tarucus telicanus) and a small 

 Hesperid (probably Baoris detecta). 



9. Trochocercits alhonotatus, Sharpe (White-spotted Fly- 



