JL AMERICAN JOURNAL 



" Descriptions of new Bivalve Mollusca in the collection of the 

 Academy of Natural Sciences. No. 2 ;" by Geo. W. Tryon, Jr. 



"Note on Cyclophorus foliaceus, Reeve, and C. Leaii, Tryon ;" 

 by Geo. W. Tryon, Jr. 



" Catalogue of the Shell-bearing Mollusca of Fulton County, 

 Illinois ;" by John Wolf. 



Meeting March 2>d, 1870. 



Nine members present. 



Mr. Tryon, Vice-Director, in the Chair. 



Donations to the Museum and Library were read. 



The following papers were read by title, and referred to Com- 

 mittees: 



" Catalogue of the known Recent and Fossil Species of the 

 Family Marginellid?e ;" by John H. Redfield. 



" Remarks on the Anatomy of the genus Siphonaria, with de- 

 scription of a new species ;" by Wm. H. Dall. 



*' Notes on Recent and Fossil Shells, with descriptions of new 

 species ;" by T. A. Conrad. 



"Notices and Reviews of New Conchological Works;" by 

 Geo. W. Tryon, Jr. 



In presenting his Catalogue for publication, Mr. Redfield 

 made the following remarks upon the family Marginellidae : 



The earliest figures of Marginella which I know are found 

 in Bonanni's Recreations, in 1684. He figures three species, — 

 M. cingidata, M. persicula and M. glabella, — all Gambian. 



Lister, in 1688, figures rudely the same species, and four 

 others, — viz.: M. faba, M. pulchraf M. elegansf, and M. py- 

 rum, — one of them West African, one Caribbean, and the others 

 from Indian Ocean. 



In 1691 Bonanni first figures the large Brazilian species M. 

 bullata. 



Sloane, in 1707, indicates the well known West Indies species, 

 M. guttata, which, however, was not figured until 66 years after- 

 wards. 



Petiver about 1711 gave figures of two other species ; they are 

 rude, but best answer to M. rosea and 31. Delessertiana, the one 

 from South Africa, the other from Mauritius. 



Adanson added five species, all (perhaps with one exception) 

 West African. 



Thus sixteen species had been indicated before the publication 

 of the tenth edition of Linnaeus' Systeraa Naturie, which work 

 includes but six of these species, compressing them, however, 

 into five, to which another was added in the twelfth edition. 



