453 
PROCEEDINGS OF SCIENTIFIC SOCIETIES. 
ENtTomMoLocicaL Society oF Lonpon. 
September 5, 1877.—Prof. J. O. Wxestwoop, M.A., F.L.S., President, in 
the chair. 
Douations to the Library were announced, and thanks voted to the 
donors. 
Mr. F. Smith exhibited, on behalf of Mr. G. A. James Rothney, a fine 
collection of Hymenoptera, collected in the neighbourhood of Calcutta 
during the past season. The majority of the species belonged to the 
fossorial division; among them were several fine species of Sphegide and 
Bembicide. In the collection were several new species of the genus Cerceris, 
also a few new species of Apidae, the whole series being in the finest possible 
condition. 
Mr. M‘Lachlan exhibited drawings (with details) of the extraordinary 
- insect from Java, described by Wesmael in 1836, under the name of 
Himanopterus fuscinervis, as pertaining to the Lepidoptera. The insect 
remaius to this day unique in the collection of the Brussels Museum. In 
1866 Dr. Hagen transferred Himanopterus to the Neuroptera as a sub- 
genus of Nemoptera. No palpi nor legs existed in the insect when first 
described, but from the neuration, general form, nature of the clothing, &c., 
Mr. M‘Lachlan is quite certain it has nothing to do with Nemoptera, and is 
truly lepidopterous, allied to the North Indian insect described and figured 
by E. Doubleday as Thymara zoida. 
Prof. Westwood stated that in 1876 he had also studied the type, and 
made drawings and agreed as to its position near Thymara. 
Mr. M‘Lachlan also exhibited leaves of a large species of Acer from trees 
growing in the grounds of Mons. van Volxen, at Lacken, near Brussels. 
These trees were many of them fifty feet in height, and almost each leaf 
had one or more large white blotches on it, being the mines of a small 
sawfly described by Kaltenbach as Phyllotoma aceris, a species occurring in 
England on the wild Acer campestre. The insect only first appeared in 
M. van Volxen’s grounds last year, and was now in such extraordinary 
profusion that the flattened discs formed by the larve when full fed made 
quite a pattering noise as they fell from the trees. Unless the insect 
should disappear as rapidly as it came, there is every possibility that 
the combined attacks of the myriads of larvae may seriously damage the 
trees. 
Prof. Westwood exhibited specimens of two minute hymenopterous insects 
from Ceylon, closely allied to Mymur pulchellus, a British species. 
