38 M. A. Milne-Edwards on the 



In this way we accumulated rich collections, which were 

 immediately submitted to investigation. 



M. L. Vaillant undertook the examination of the Fishes and 

 Sponges ; M. E. Perrier took charge of the Echinoderms ; 

 M. Marion of all the other zoophytes and the Annelids ; M. 

 P. Fischer of the Mollusca ; Dr. jullien of the Bryozoa ; M. 

 Terquem of the Ostracoda; M. de Folin and M. Schlum- 

 herger of the Foraminifera and the Radiolaria ; and M. Certes 

 of the Infusoria and some other Protozoa. I reserved to 

 myself the investigation of the Crustacea. M. Stanislas 

 Meunier has determined some of the rocks torn by the dredge 

 from the bed of the sea ; and, finally, M . Perier, Professor in 

 the School of Medicine and Pharmacy at Bordeaux, is to 

 analyze the samples of the bottom. In the summary report, 

 which I now lay before the Academy, I merely indicate the 

 results obtained by the naturalists whose names I have just 

 mentioned ; it will therefore be easy to recognize the part 

 that belongs to each of them. 



As was the case last year, our dredgings only furnished us 

 with a few fishes. At depths not exceeding 450 metres we 

 took some Gobies, Phycis mediterranean and several speci- 

 mens of Plagvsia Jactea^ a very rare species of Pleuronectidte ; 

 finally, at a distance of a few miles from Marseilles, at a depth 

 of 106S metres, the tangles brought up Argyrojielecus hemi- 

 (jymnus. 



A great number of Crustaceans which were known only 

 from the Atlantic also inhabit the abysses of the Mediter- 

 ranean. We have ascertained the existence there of Lisjio- 

 gnothus {Dorynchus) Thomsoni, Norman, which is so abun- 

 dant in the Bay of Biscay ; of the Geryon which we had 

 previously captured in the submarine valley of the north of 

 Spain, which must be distinguished from the Norwegian 

 Geryon tridens^ and to which we have given the name of 

 Geryon longi])es ; and of Ehalia mcx, Norman ; Cymonomus 

 (Et/iKsa) granidatuSj Norman; Munida tenuimana^ Sars; 

 Calocaris Macandra't, Bell ; and Loidiogaster tyjyicus, Sars. 

 Ofi:' Toulon, at 455 metres, we captured two new (Jxyrhynchi, 

 one of them belonging to the genus Hetcrocrypta of Stimpson 

 {Ileterocrypta Mariom'sj A. M.-E.), which previously inclu- 

 ded only three species, two belonging to America, and the 

 third to Senegambia. The second is not very far from Ama- 

 thia ; we have called it Ergasticus Clouet, to commemorate at 

 once the name of our ship * and that of Admiral Clone, whose 

 cooperation was most useful to our expedition. 



* From (pyacrriKOi, laborious. 



