424 . Zoological Proceedings of Societies. 



one of the observations contained in his work on the generation of 

 articulated animals ; it related to the use of a vesicle which ac- 

 companies the female organs of generation in insects. 



May 31. — M. Magendie stated that he was proceeding with his 



experiments on the fifth pair of nerves. M. Desmoulins read 



a Memoir on the differences between the nervous system of the 

 Lamprey, and that of the other Vertebrata, with regard, 1st. to 

 physical properties; 2ndly, to the number of parts; and 3rdly, to 

 the mode of union of those parts. 



June 7. — This day the annual public meeting of the Academy 

 was held, when the Physiological Prize, fouuded by M. de 

 Monthion, was divided between M. M. Flourens, Prevost, and 

 Dumas. M. Strauss, author of a work on the Anatomy of the 

 Cockchaffer, also obtained a medal ; and M. Gaspard honourable 

 mention. 



June 14. — M. M. Cuvier and Latreille made a report on a 

 Memoir, by M. Leon Dufour, entitled, A Collection of Observa- 

 tions on the Anatomy of the Coleoptera. M. Cuvier read a 



Memoir On the Plesiosaurus M. G. St. Hilaire read a Me- 

 moir On the Auditory Faculties of Fishes. 



July 12. — M. G. St. Hilaire made a verbal report on a work by 

 M. Serres, entitled, The Comparative Anatomy of the Brain, in 

 the four classes of Vertebrated Animals. 



July 26. — M. Latreille read a note accompanying a drawing of 



a new genus of Spiders, which he has named Myrmecia. 



M. M. Bosc and Latreille read a report on a Memoir by M. Guyon, 

 on a species of Leech, found in the eye-lids and nasal fossa of the 

 Ardea virescens of Linnaeus, at Martinique. 



August 2. — It was announced that the bones of a Mastodon, of 



great size, had been found in a gravel-pit at Montpellier. 



M. G. St. Hilaire made some observations on the fossil discovered 

 at Moret, and said to belong to the human species. He consi- 

 dered this opinion to be void of foundation. M. Desmoulins 



read a Memoir On the lachrymal organ, and nervous system of the 

 Trigonocephali. 



August 9. — M. M. de Hermilly and St. Clair, proprietors of the 

 fossil of Moret, announced that they would furnish M. Thenard 



