594 Mr. J, C. Moulton on some of the principal Mimetic 



the hind-wing come out in this Nymphaline as in the 

 Lycorca. It also follows the Lycorea in the more ochreous 

 shade of the yellow markings of the forewing. 



With the object of showing more forcibly that these 

 several species do actually occur together in one area, 

 and have in many cases been caught on the same day, 

 I have appended a list of the specimens collected in 

 Brazil, between 1825 and 1830, by W. J. Burchell. It 

 is a striking fact that one should have to go back to 

 a collection eighty years old in order to gain the best 

 available proof that these butterflies are associated to- 

 gether in space and time! 



In addition to many members of both sub-divisions, 

 Burchell took a fine series of the Pierine, Perrhyhris 

 {3Iylothris) ^9?/7'r/i«, Fab. This species has not been in- 

 cluded in the list on p. 591, because the apical spot is 

 absent. Like all members of its genus, it is but a 

 rough mimic, and, as regards the upper surface, a mimic 

 only in the female. Just below the apical region, there is 

 visible, near the hind margin of the fore-wing, the ap- 

 parent incipient separation of a yellow spot from the 

 oblique bar — a separation which is complete on the 

 under surface. On this account the species is placed 

 in the table of Burchell's captures as printed on p. 595, 

 next to the sub-division with yellow apical spots. 



H. W. Bates published the following interesting note on 

 the habits of this species in his paper on the " Insect 

 Fauna of the Amazon Valley " (Journal of Eatomology, 

 December 18G1, pp. 235, 236): "It inhabits the shades 

 of the forest; but the males are fmad also in open places, 

 and resort to the moist margins of puddles and streams ; 

 the females I have never seen except within the forest ; 

 they are much rarer than the males, and are coloured in 

 imitation of certain Heliconidse * found in the same local- 

 ities. The species has a wide range ; it is common at 

 Rio Janeiro and Bahia; specimens from those localities I 

 find do not differ from those taken by myself in the 

 Amazon region." 



An interesting feature is noticeable in the hind-wing 

 where the broad black margin is deeply serrated in its 



* In the term "HeHconid?e," Bates included the Ithomiinx, the 

 Lycoraeini (a section of the Danainae) and the Helicunime. The two 

 former he called " Danaoid Heliconidee" and the third " Acrxoid 

 Heliconidee." 



