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XIV. On the Scent Apparatus in the male of Amauris 
niavius, Linn. By H. Evrrineuam, M.A., F.Z.S. 
[Read March 19th, 1913.] 
PuaTE XX. 
In 1877 the late Dr. Fritz Miiller published a paper ‘“‘ On 
the Sexual Spots of the males of Danais erippus and D. 
guippus.” * He there describes the pockets in the hind- 
wings of these insects as lined with special scales, and at 
the same time gives figures of these structures and of the 
extrusible brushes situated in the anal region. At the 
end of this account he makes the remarkably ingenious 
suggestion that the insects may insert the brushes vied the 
pockets and so impregnate the former with the scent 
material therein secreted. It remained for that acute 
observer, Mr. W. A. Lamborn, actually to see a similar 
process taking place in a species of an allied genus, 
Amauris.t 
Mr. Lamborn first observed the action in Amauris 
niavius in 1911, and early in the following year noticed 
the same habit in Amauwris egialea. 
In this genus the scent patches are not in the form of 
pockets but are merely specialised portions of the hind- 
wing, and Mr. Lamborn was fortunate enough to see the 
butterfly stroking the patches with its brushes. 
Actual confirmation of Miilier’s suggestion having been 
obtained, it occurred to me to examine minutely the 
structure of the brushes and scent patches in a species of 
this genus, and Amauris niavius was chosen as being the 
most easily obtainable. 
One of the first difficulties in an undertaking of this 
kind is to obtain material in a proper state of preservation, 
* Archivos do Museu-Nacional do Rio de Janeiro, II, pp. 25-29, 
1877. English translation by Elliott in Longstafi’s “ Butterfly 
Hunting in Many Lands,” Appendix, p. 616, 1912. 
f Proc. Ent. Soc. Lond., pp. xlvi-xlvii, 1911, and p. xxxv, 1912. 
t It is interesting here to recall Prof. Poulton’s exhibit recorded 
in the Proceedings of this Society, p. x, 1907,.when an example of 
Amauris egialea was shown having had the scent patches comuplctely 
eaten out by ants. 
TRANS. ENT. SOC. LOND. 1913.—PART II. (SEPT.) 
