6 List of Scientific Papers. 



11. Remarks on certain Species of North American t Helicidce; 



with Note on the Toothed Helices of North America. — 

 Same, Vol. VI, pp. 280-302, 336-362, pi. IX, Feb., 1858 ; 

 Vol. VII, pp. 26-39, Jan., 1859, pp. 115-142, Apr., 1860, 

 pp. 420-448, pi. IV, Feb., 1862. 



[These papers were also issued in pamphlet form:— Part I, New York, 

 ls.-,s; Part II, New York, 1800; Part III, New York, 1S62; all repaged. 



The new species described are Helix pustuloides, I'ostelliana, auri- 

 formis, espiloca, introferens, Christy i, Jflwatleyi, Carpenter iana, Doton- 

 ieana, triodontoides and labrosaJ] 



12. Notice of Land and Fresh water Shells collected by Dr. J. G. 



Cooper, in the Rocky Mountains, etc., in 1860. — Same, 

 Vol. VII, pp. 362-370, pi. IV, June, 1861. 



[This paper was published jointly with Dr. J. G. C#oper; it contains 

 descriptions of Helix poly yyrdla and Mullani.] 



13. On the Geographical Distribution of the Genera and Species 



of Land Shells of the West India Islands, with a Cata- 

 logue of the species of each Island. — Same, pp. 335-361, 

 June, 1861. 



[Also published in pamphlet form, with dedication to the memory of 

 the then late Prof. C. II. Adams and his son C. B. Adams, with Pref- 

 ace, 1861.] 



14. On the Family Proserpinacea, with Description of a New 



Species of the Genus Proserpina. — Same, Vol. VIII, pp. 

 13-17, May, 1863. 



[Proserpina Swifti described.] 



15. Remarks on Classification of North American Helices by 



European Authors, and especially by H. & A. Adams and 

 Albers.— Same, Vol. VIII, pp. 17-40, Oct., 1863. 



[Together with and included under this title, will be found a "Catalogue 

 of the Species of Helix which inhabit North America (exclusive of 

 the Pacific Coast and Mexico) arranged especially with reference to 

 the forms of the Shells and showing the Genera and Subgenera in 

 which they are placed by Pfeiffer and Albers; "also "Descriptions of 

 the principal Genera and Subgenera, in which certain North Ameri- 

 can Species of Helix are arranged by Albers, ' Die Helicen' 2nd Ed.," 

 with an Addendum containing ''Catalogue of the Species of Helix 

 which inhabit North America West of the Kocky Mountains, from the 

 extreme North to the northern limit of Mexico, exclusive of those 

 marked f i" the preceding Catalogue."] 



16. Note on the Buccal Plate (Jaw) in certain Genera of the 



Family Cyclostomacea. — Am. Journ. Conch., Vol. I, pp. 

 45-46, pi. 5, Feb., 1865. 



