28 History of Conchology in the United States. 



Indian Terrestrial Mollusca. He contributed several papers to 

 the " Contributions to Conchology," cataloguing the species of 

 St. Thomas, W. L, and New Granada. He has also an article 

 in this Journal, Nov. 1852, entitled, "Facts and principles rela- 

 ting to the origin and Geographical Distribution of Mollusca." 



Mr. Bland's most important papers are the " Remarks on cer- 

 tain species of North American Helicida?, with descriptions of 

 new species," of which two parts have appeared in the 6th and 

 7th volumes of the Lyceum Annals. The third part is now 

 ready for publication. These papers form a valuable addition 

 to our critical knowledge of the Helices of the United States. 

 Mr. Bland has also just issued a paper (see p. 158, this vol.) on 

 the Geographical distribution of the Genera and Species of Land 

 Shells of the West Indies, which gives many curious and im- 

 portant facts in reference to the range of species. Mr. Bland is 

 thoroughly familiar with these shells, and is perhaps better fitted 

 to pursue this important line of investigation than any other 

 conchologist. 



Wesley Newcomb, M.D., formerly of Troy, N. Y., now of 

 Oakland, California, during a residence at the Sandwich Islands, 

 for many years, studied the beautiful terrestrial genus Achati- 

 nella. He has described a large number of species in the New 

 York Lyceum Annals, the Boston Proceedings, and the London 

 Zoological Proceedings. His papers in the latter are illustrated 

 with fine colored plates. 



The Achatinellse have also been studied and described by 

 Dr. Mighels, Prof. Adams, Dr. Gould, and Mr. Gulick. 



The genus Argonauta has been studied by Dr. J. C. Parkin- 

 son, who has added two new species. — Bost. Proceed., Sept. 1856. 



William A. Haines, of New York, the possessor of one of the 

 finest private conchological collections in the world, has a paper 

 in the New York Annals, vol. vi, Oct. 1855, describing several 

 new species of terrestrial shells from Siam. 



James Lewis, M.D., of Mohawk, N. Y., has industriously stud- 

 ied the Mollusks of that vicinity, making many valuable addi- 

 tions to our knowledge of the habits and mode of growth of 

 many of the fiuviatile species. His numerous brief papers are 

 contained in the Boston and Philadelphia Proceedings. 



J. B. Trask, M.D. The only papers on Conchology published 

 as yet west of the Rocky Mountains, are two by Dr. Trask, de- 

 scribing new species of Naiades of California, published in the 

 Proceedings of the California Academy of Nat. Sciences, vol. i, 

 1855 ; and Descriptions of Terrestrial and Fiuviatile Shells, by 

 Dr. Newcomb, in the Proceedings of the same Society for 1859 

 and 1860. 



William G. Binney, of Burlington, N. J., has continued the 

 investigation of the Terrestrial Shells, commenced by his father. 

 He published in 1859, in the Boston Journal of Natural History, 



