116 



spiracles either in the first, or in the fold between the first and second segments, it 

 might at first sight seem to warrant the conclusion, that the large membranous seg- 

 ment following the head is really part of the head. But when the corneous head itself 

 is separately examined, it presents all the characters of a perfect head, and it is seen, 

 moreover, that the second pair of legs is certainly attached to the segment which bears 

 the first pair of spiracles, we shall be compelled to consider the first segment as re- 

 duced to the small inferior fold which bears the first pair of legs. Taking all these 

 circumstances into consideration, the President was clearly of opinion that the large 

 segment in question is not part of the head, but is the real first segment greatly deve- 

 loped ; and that the position of the first pair of spiracles on the second segment of the 

 body is anomalous. 



December 1, 1851. 

 J. O. Westwood, Esq., President, in the chair. 



The following donations were announced, and thanks ordered to be given to the 

 donors : — ' Entomologische Zeitung ' for October ; by the Entomological Society of 

 Stettin. ' The Zoologist' for December ; by the Editor. 'The Literary Gazette,' 

 three Nos. for November ; by the Publishers. ' Annals of the Lyceum of Natural 

 History of New York,' Vol. v. No. 3 ; by the Lyceum. • Smithsonian Contributions 

 to Knowledge,' Vol. ii., 1851. ' Proceedings of the American Association for the Ad- 

 vancement of Science, fourth meeting, August, 1850. ' Fourth Annual Report of the 

 Smithsonian Institution.' ' Ephemeris of Neptune for 1852, by B. A. Gould, jun.' 

 ' Report to the Smithsonian Institution on the Discovery of Neptune.' ' Report to 

 the Smithsonian Institution on the Public Libraries of the United States, by Prof. C. 

 C. Jowett,' 1851. ' Patent Office Report,' 1848 : — all presented by the Smithsonian 

 Institution. 'Boston Journal of Natural History,' Vol. vi. No. 1 and 2, Boston, 1850: 

 by the Boston Society of Natural History. ' Dipteres Exotiques,' par J. Macquart, 

 Suppl. Paris : 18478 ; by the Author. ' Analyse des Experiences sur la Muscardine 

 et les autres Maladies des Vers a Soie en 1849.' ' Insectes nuisibles aux Recoltes, 

 moyens d'arriver a leur destruction.' ' Enumeration des Insectes qui consomment les 

 Tabacs.' ' Extrait des Materiaux recueillis pendent la Campagne Sericicole de 1850, 

 sur les Maladies des Vers a Soie.' ' Essaie sur les Insectes utiles et nuisibles.' All 

 by M. Guerin Meneville, and presented by him. ' Rapport sur les deux Essais sur 

 les Maladies des Vers a Soie, par iM. Dumeiil;' by M. G. Meneville. ' Pro- 

 ceedings of the Royal Society,' Vol. vi. No. 80 ; by the Society. A box of British 

 Lepidoptera, in very fine condition ; by H. Doubleday, Esq. 



There have also been purchased fur the Library, ' Systematische Beschreibung 

 Zweigelfliigeligen Insekten ;' by J. W. Meigen, Vol. vii. 



G. Gu\on, Esq., Richmond, and T. Dossetor, Esq., London, were elected Members 

 of the Socie'.y ; and James Dutton, Esq., Hammersmith, was elected a subscriber to 

 the Society. 



