de larves de Phryganides de Baviere ; ' by the Author, M. A. Preudhomme 

 de Borre. 'On the Origin of Insects;' by the Author, Sir J. Lubbock, 

 Bart. ' A Letter concerning Deep-Sea Dredgings, addressed to Professor 

 Benjamin Peirce, Superintendent United States Coast Survey;' by the 

 Author, L. Agassiz. ' Nye Dybvands crustaceer fra Lofoten,' af G. 0. Sars ; 

 ' Bidrag til Kundskab om Christianiafjordens Fauna,' ii., af Michael Sars ; 

 * Efter Forfatterens efterladte Manuskripter samlet og udgivat af huns Son 

 G. O. Sars ; ' ' Carcinologiske Bidrag til Norges Fauna— I. Monograph! 

 over de ved Norges Kyster forekommende Mysider,' Forste Hefte, af G. O. 

 Sars; by M. G. 0. Sars. ' Om en i Sommern 1869 foretageu entomologisk 

 Reise gjennem Ringuike, Hallingdul og Valdus,' af H. Siebke ; by the 

 Author. 'Crustacea amphipoda borealia et arctica,' auctore Axel Boeck ; 

 by the Author. ' Cistula Eutomologica,' part iv. ; by E. W. Janson. ' The 

 Zoologist' for February; by the Editor. 'The Entomologist's Monthly 

 Magazine' for February; by the Editors. ' Monographie der Passaliden,' 

 von Dr. J. J. Kaup ; by T. Compton, Esq. ' Tijdschrift voor Entomologie,' 

 Ser. 2, tome vi., Nos. 2 — 6 ; by the Entomological Society of the Nether- 

 lands. ' Sepp's Nederlandsche Lisecten,' Ser. 2, tome iii., Nos. 3 — 12 ; by 

 Dr. S. C. Snellen van Vollenhoven. 'The Position of the Caddis Flies;' 

 by the Author, A. S. Packard, jun., Esq. 'A List of the Species of 

 Sphingidse in the Collection of the Royal Dubhn Society,' by W. F. Kirby, 

 Assistant in the Museum ; by the Author. ' Contributions a I'Histoire 

 Naturelle et a TAnatomie de la Mouche-feuille des lies Seychelles,' Phyllium 

 crurifolium (Audinet Serville), Mantis sicciofolia (Linne), par le Dr. N. Joly : 

 ' Sur THypermetamorphose de la Palingenia Virgo a I'etat de Larve; 

 analogies de cette larve avec les Crustaces,' par le Dr. N. Joly; by the 

 Author. 



By purchase: — 'The Zoological Record for 1870.' ' Catalogus syste- 

 maticus Dipterorum Europae,' auctore R. J. Schiner, Dr. ' Skandinaviens 

 Heterocer-fjarilar, beskvifne af H. D. J. Wallengren Forsta delen.' 'Hy- 

 menoptera Scandinavise,' auctore C. G. Thomson, tome i. ' De Vlinders 

 van Nederland, Macrolepidoptera, systematisch beschreven door P. C. T. 

 Snellen.' 



Exhibitions, dc. 



Mr. M'Lachlan brought before the notice of the meeting an illustration 

 of the manner in which the ravages of Aphides are checked by parasitic 

 Hyraenoptera. He exhibited a portion of poplar-twig from Dr. Knaggs's 

 garden at Kentish Town, which had been occupied by a large family of dark- 

 coloured Apbides ; of these nothing now remained but their empty inflated 

 skins, each of which presented a circular opening, whence the parasite 

 (probably an Aphidius) had emerged, the whole bearing much resemblance 

 to a collection of empty egg-shells of some large Lepidopterous insect. The 



