3 to AMERICAN JOURNAL 



Remarks on the Species of Succinea inhabiting the Tahitian 

 Archipelago, luith Description of a neiu Species: BY WM. 

 HAEPER PEASE. 



S. costulata, Pease. 



FRENCH. 



Journal de Conchyliologie. Vol. V. No. 3. July l, 1865. 



Note sur les faunes conchy liologiques des deux rivages de 

 VIsthme de Suez: BY P. FISCHER. 



M. Fischer, referring to the fact that the rich molluscous 

 faunas separated by the Isthmus of Panama, contain but four 

 or five species in common, proceeds to examine the identity of 

 the species of the Mediterranean and of the Red Sea, sepa- 

 rated by the Isthmus of Suez. The result is the conviction 

 that not a single species is held in common by the two seas. 

 Lists of shells from the waters of both sides of the narrowest 

 part of the Isthmus, collected with the special purpose of 

 affording data for determining this important question, are 

 given; and no less than tAventy of the genera represented in 

 the conchological fauna of the Red Sea, are wanting to that 

 of the Mediterranean. As M. Fischer remarks, the comple- 

 tion of the Suez Canal will cause a commingling of the spe- 

 cies of the two seas. 



The errors of habitat, committed by former writers, are 

 commented on. 



Etudes sur lafaune malacologique de Saint- Jean- de-Luz^ de 

 Dinan et quelques autres points du littoral oceanien de la 

 France: BY I. MABILE. 



Two new species are described in this paper, the first, Helix 

 ignota, being the Helix intersecta of Michaud, but not of Poiret. 

 It has been confounded with intersecta, both by Dupuy and 

 Moquin-Tandon. The second new species is Glausilia Pauli. 



Quelques mots sur un arrangement des Mollusques pulmonis 

 terrestres [Geophiles, Fer.) base sur le systhne naturel: BY 

 O. A, L. MORCH. 



This is the first of what promises to be a very interesting 

 series of papers. Various characters of the soft parts and 

 shell are examined with reference to their relative importance 

 in the separation of the species into genera and higher groups. 



We can scarcely agree with Mr. Mcirch, that the genus Triodop- 

 sis, Raf., is a good example of his rule, that "The number of teeth 



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