21 



BLAND, THOMAS. (Continued.) 



.Remarks on certain species of North American Helicidix), with 

 Descriptions of new species. (Read February 22d.) 



Vol. vi, p. 280. February, 1858. 



Continuation. (Read September 13th.) 



Vol. vi, p. 336. September, 1858. 



Continuation. (Read December, 20th.) 



Vol. vii, p. 26. December, 1858. 



Continuation. (Read March 5th, 1859.) 



Vol. vii, p. 115. April, 1860. 



These ll Remarks on certain species of North American Helicidce," $c., arc also 

 published separately. 



Part 1. New York, 1858, from Vol. 6 of the Annals. 



Part 2. New York, 1860, from Vol. 7 of the Annals. 



IX SILLIMAN'S AMERICAN JOURNAL OF SCIENCE AND ARTS. 2o SERIES. 



Facts and Principles relating to the Origin and Geographical 

 Distribution of Mollusca. 



Vol. xiv, No. 42, p. 389. November, 1852. 

 Also in pamphlet form. 



IN ADAMS' CONTRIBUTIONS TO CONCHOLOGY, VOL. 1, Svo. NEW YORK, 1852. 

 Also issued in Numbers. 



Catalogue of the Terrestrial Shells of St. Thomas, W. I. 



No. 11, p. 215. October, 1852. 



On the ClausiliaB of America. 



No. 11, p. 224. October, 1852. 



Catalogue of Terrestrial Shells collected by T. Bland, in New 

 Granada, in 1851. 



No. 11, p. 228. 1852. 



The above continued. 



No. 12, p. 231. 1852. 



Notice of Petit's Journal de Conchy liologie, &c. 



No. 12, p. 241. 1852. 



Notice of Poey's Memorias sobre la Historia Natural de la Isla 

 de Cuba, &c. 



Xo. 12, p. 242. 1852. 



