¢ ba, } 
needs to be verified before it can take rank as a true 
explanation. 
Some would explain all supposed cases of mimicry as being 
merely the result of coincidence. In the midst of so wide a 
range of facts it is to be expected that coincidences should be 
found; and as a matter of fact they do occur under circum- 
stances which put explanation by the principle of mimicry out 
of the question. There is a numerous assemblage in South 
America characterised by a white diagonal band crossing the 
fore-wing, the general surface of both wings being of a dark 
colour. To this assemblage belong many species of diverse 
families of both butterflies and moths. The following are here 
exhibited :— 
DARK GROUND-COLOUR WITH WHITE DIAGONAL 
BAND. 
AMERICA. ERYCINIDAE. 
NYMPHALINAE. Mesosemia mevania, Hew. 
Catonephele capenas, Mesosemia asa, Hew. 9. 
Hew. 9. 
$ HESPERIIDAE. 
Ectima rectifascia, Butl. B we eae 
Ectima livia, Fab. pestle - oely Fa sco 
Eunica eurota, Cram. 9. GSC PECLEAS TAM 
Eunica sophonisba, Cram. Sua at 
9 Thymele enotrus, Cram. 
Orses cynisca, Swains. 
Adelpha epione, Godt. 
ee epg xO Spathilepia clannius, 
Phyciodes, sp. 
Cram. 
Cecropterus neis, Hibn. 
SATYRIN AE. 3 
Lasioplila prosymna, Cecropterus neis, Hiibn. 
Hew. 9 
Pedalhodes speucestas, Cecropterus annus, Fabr. 
Hew. Cecropterus itylus, Hiibn. 
Pp y 
ACRAEINAE. SYNTOMIDAE. 
Actinote hylonome, Doubl. Ctenucha circe, Stoll. 
Q. Ctenucha braganza, Schs. 
