52 



descriptions of various new species ; " by Francis Walker. " Meta- 

 morphosis of Donacia sagittaria ;" by M. Perris : (from the 'Biblio- 

 theque Universelle de Geneve,' June, 1849). " On the Pathology of 

 the Silkworm [Bombyx mori,L.) — Examination of the Blood;" by F. 

 G. Guerin-Meneville : (from the 'Gazette des Hopitaux,' Feb. 2, 

 1850). " Description of the Entomostraca of the Pleistocene Beds of 

 Newbury, Copford, Clacton, and Grays ; " by T. Rupert Jones. 

 " On the Circulatory Apparatus and the Organs of Respiration in the 

 Arachnida;" by M. Emile Blanchard. " Notes on Crustacea;" by 

 C. Spencer Bate. " On the different modes of Aquatic Respiration in 

 Insects ;" by M. Leon Dufour : (from the 'Comptes Rendus,' vol. xix. 

 p. 763). "On the effects produced by some Insects, &c. upon 

 Plants;" by James Hardy. "On the Classification of Trilobites ; " 

 by M. Barrande, of Prague, in Bohemia. " On the Visual Organs of 

 the Annelida;" by M. A. De Quatrifages: (from the ' Comptes Ren- 

 dus,' Dec. 31, 1849). Descriptions of some newly-discovered species, 

 and characters of a new genus of Araneidea;" by Mr. J. Black wall. 

 " Descriptions of some New Butterflies ; " by Mr. W. C. Hewitson.. 



The ' Zoologist,' as usual, contains numerous brief notices relating 

 to insects, besides which, the following descriptive papers form contri- 

 butions to this journal : " Characters of undescribed Diptera in the 

 British Museum ; " by Mr. F. Walker. " Descriptions of two New 

 Species of Tineidse;" by Mr. J. Sircom, Jun. "Description of a 

 second Lepidopterous Insect of the genus Psyche, recently discovered 

 in Britain ; and proposed separation of a well-known European spe- 

 cies under a new generic name ;" by Mr. E. Newman. " Description 

 of New British Aphides ;" by Mr. F. Walker. " Descriptions of Lepi- 

 dopterous Insects of the genera Hypenodes, Eupithecia, and Spilonota, 

 recently discovered in Britain ; " by Mr. Henry Doubleday. " Ran- 

 dom Observations on the Psychidae, in reference to Mr. Newman's 

 paper on that family ; " by Mr. J. F. Stephens. " Description of cer- 

 tain Longicorn Coleoptera from New Holland ; " " Description of a Pen- 

 tamerous Coleopterous Insect from New Holland;" "Description of 

 three Coleopterous Insects from New Zealand ;" "Description of an 

 Agrion from the interior of South America ;" " Description of an ap- 

 parently New Lepidopterous Insect of the family Glaucopidas, from the 

 Upper Amazons ; " " Descriptions of two New Coleopterous Insects 

 from New Holland;" all by Mr. E. Newman. 



I will now draw your attention to a few other contributions to 

 Entomology which have appeared in this country during the year. 

 The first on my list is an 8vo work, entitled " Insecta Saundersiana, 



