CONTENTS. Vll 



PAGE 



XX. Revision of an Essay on the British Formicida, published in 

 the Transactions of the Society. By Frederick Smith, 

 Esq 274 



XXI. Observations on the Habits of the Dipterous Genus Conops. 



By S. S. Saunders, Esq 285 



Description of Plate XXVIII.— Illustrating Mr. S. S. Saun- 

 ders's " Memoir on the Habits of the Dipterous Genus 

 Conops." By J. O. Westwood, Esq., F. L. S. . . . 291* 



XXII. Synopsis of the Genus Eluchista. By H. T. Stainton, Esq. 292 



XXIII. Descriptions of some New Species of Chrysomelidtz. By J. 



S. Bai.y, Esq 339 



