xl 
plateaus of the Rocky Mountains, as far south as Mexico, and the climate 
of the West Coast of America being much more like the West Coast of 
Europe, their Faunas also bore a greater resemblance. He believed the 
absence of the insect from the west of the Rocky Mountains to depend upon 
the difference of climate, and the same cause might be expected to prevent 
the establishment of the insect in countries where the moisture of the 
atmosphere would probably be fatal to it. 
Mr. Stevens remarked that on different occasions he had received the 
insect in great numbers in bottles from Orizaba. 
Paper read. 
Mr. Edward Saunders communicated the first part of a ‘Synopsis of 
British Hemiptera (Heteroptera).” 
May 3, 1875. 
Sir Srpney SuirH SaunpeErs, C.M.G., President, in the chair. 
Donations to the Library. 
The following donations were announced, and thanks voted to the 
donors :—‘ Verhandlungen der k. k. zoologisch-botanischen Gesellschaft 
in Wien,’ band xxiv.; presented by the Society. ‘Tijdschrift voor Ento- 
mologie,’ decl. xviii., afl. 2; by the Entomological Society of the Nether- 
lands. ‘Annales de la Societé Entomologique de Belgique,’ tome xviii., 
fasc.1; by the Society. ‘Report of the Entomological Society of the 
Province of Ontario for the year 1874;’ by the Society. ‘Sepp’s Neder- 
landsche Insecten,’ decl. iii., nos. 25—36; by the Author, Dr. 8. C. Snellen 
van Vollenhoven. ‘Recherches sur les phénonemes de la digestion chez 
les Insectes;’ by the Author, M. Félix Plateau. ‘The Distribution and 
Correlation of Fossil Insects, and the supposed Occurrence of Lepidoptera 
and Arachnida in British and Foreign Strata, chiefly in the Secondary 
Rocks;’ by the Author, the Rev. P. B. Brodie, M.A., F.G.S. ‘The 
Canadian Entomologist,’ vol. vii., no. 38; by the Editor. ‘L’Abeille, 1875,’ 
livr. 6; by the Editor. ‘Nyer Slegter og Arter af Saltvands-Copepoder,’ 
af. Axel Boeck; ‘Enumeratio Insectorum Norvegicorum Fasciculus I. 
Catalogum Hemipterorum et Orthopterorum continens,’ auctore H. Siebke ; 
‘ Bidrag til Kundskaben om Dyrelivet paa vore Havbanker,’ af G. O. Sars ; 
‘Bemerkninger om de til Norges Fauna hoerende Phyllopoder,’ af G. O. 
Sars; ‘Om en dimorph Udvikling samt Generations vexel hos Leptodora,’ 
af G. O. Sars; by the Royal University of Norway, Christiana. ‘ Pro- 
ceedings of the Royal Society,’ no. 160; by the Society. ‘Newman's 
