(< xia) 
A USEFUL APPARATUS.—Dr. G. B. Lonestarr exhibited 
a simple apparatus which he had designed, with the assistance 
of Mr. H. Eltringham, to turn over several butterflies at once, 
so as to display alternately the upper- and under-sides. It 
was manufactured by W. Watson & Son, 313 High Holborn. 
BEE AND ParasttE.—Dr. LonestarFrF also exhibited a small 
bee (Andrena, sp.) with a coleopterous larva, apparently a 
Meloid, partly on, partly in its abdomen. Captured near 
Seville, Spain, April 15, 1913. 
A PALE TAENIOCAMPA GRACILIS.—Mr. J. C. F. Fryer 
exhibited a light specimen of Taeniocampa gracilis for com- 
parison with that exhibited at the last meeting by the Hon. 
N. C. Rothschild. 
THALPOCHARES OSTRINA FROM PaiGnron.—Comm. J. J. 
WALKER exhibited, on behalf of Dr. R. C. L. PErxrns, a 
specimen of Thalpochares ostrina, Hiibn., var. carthami, H.S., 
apparently freshly emerged from pupa. This was taken by 
Dr. Perkins at Paignton on June 1, 1913. 
THE RESEMBLANCE BETWEEN THE UNDER SURFACE OF MANY 
SPECIES OF MELITAEA AND THAT OF CERTAIN PALAEARCTIC 
HESPERIDAE.—Prof. PouLTon said that he had called atten- 
tion to the striking resemblance between the parts of the 
under-side exposed during rest of many species of Melitaea 
and certain Hesperidae—especially the large species H. antonia, 
Spey., H. sidae, Esp., and to a less extent H. carthami, Hiibn. 
(Proc. Zool. Soc., 1911, pp. 866-7). This resemblance had 
very much struck him in looking through a collection of 
butterflies made about 1906 in the Tian-Chan Mountains in 
Central Asia, and belonging to the late Mr. Henley Grose- 
Smith. Prof. Poulton had no means of ascertaining whether 
the captures were effected in Russian or Chinese Turkestan. 
The details of the resemblance are described in the paper 
referred to. In order to test the hypothesis of a mimetic 
association, he had in 1909, with the help of Commander 
Walker, sent many living specimens of the English Melitaea 
aurinia, Rott., to Mr. R. I. Pocock, F.R.S. His experiments in 
the Zoological Gardens, as recorded in P.Z.S., 1911, pp. 825-7, 
left little doubt, when they were looked at as a whole, that 
Melitaea does actually possess qualities that would render it 
