1866.] Geology and Palxontology. 583 
genus of an entirely new type of form, having, however, from its 
three-jointed antennz a certain analogy with the Pausside. It was 
described under the name of Hctrephes formicarwm. Descriptions 
of other curious species were also laid before the meeting. Mr. 
Stainton made some observations on the difficulties of determining 
the species of Gelechia feeding on the Caryophyllaceze. Professor 
Westwood exhibited drawings and read descriptions of various 
species of Goliathi from the Zambesi. Mr. Wilson, of Adelaide, 
communicated further Notes on the Buprestide of South Australia. 
July.—Among the exhibitions were a collection of Lepidoptera 
from Mexico, by Mr. E. Saunders ; of examples of Dicranocephalus 
Wallichii, from Northern India, and of D. Bowringii, from 
Southern China, by Mr. Stevens. Mr. Bond also exhibited a 
specimen Dianthecia cexsia recently taken in the Isle of Man. 
Mr. Pascoe called the attention of the meeting to a paper by Mr. 
A. Miller, in the ‘ Zoologist,’ respecting the cylindrical holes 
formed by insects alighting on the snow im the Higher Alps, and 
confirming the observations made by him (Mr. Pascoe) at a former 
meeting. Von Tschudi, in his ‘Thierleben der Alpenwelt, has 
stated that some of these holes attain a depth of two feet, and that 
the insects alighting on the snow do so apparently for the purpose 
of enjoying the oxygen which is supposed to be set free during the 
thawing of the snow. The Rey. Douglas Timmins communicated 
some notes on the larve of Charawes Jasius and Melitxa 
provincialis. 
August.—Collections of insects of all orders were exhibited by 
Mr. Stevens, from Madagascar, formed by Mr. Gerrard; and from 
Bahia, formed by Mr. Read. A collection of the cases of Caddis- 
fies from various parts of Europe were exhibited by Mr. 
McLachlan. Mr. Janson exhibited a pair of the rare Velleius 
dilatatus, found in the nests of the Goat-moth in the New Forest. 
Professor Westwood read an account of the ravages recently com- 
mitted by locusts in Algeria, apparently one of the most destructive 
visits of those insects ever recorded. 
VI. GEOLOGY AND PALAZONTOLOGY. 
(Including the Proceedings of the Geological Society.) 
Tue most important geological event of the past quarter is, no 
doubt, the publication of the third volume of the ‘ Memoirs of the 
Geological Survey of Great Britain,’ consisting entirely of Professor 
Ramsay’s long-promised work on ‘The Geology of North Wales.’ 
The descriptions of the fossils have been drawn up by Mr. Salter, 
