MOLLUSC A— GASTROPODA. 585 



publications of the Canadian Survey, especially '.' Contributions to Cana- 

 dian Palaeontology " and " Canadian Organic Remains " ; various re- 

 cent publications of the New York State Survey, especially memoirs 5, 

 6 and 9 ; Vol. 3 of the Palaeontology of New Jersey ; the two volumes 

 on the Palaeontology of Ohio ; and Vol. VII. of the Geology ; the 

 Palaeontological volumes of the Illinois Survey; the early volumes of 

 the Iowa Survey ; certain volumes of the Indiana Survey (especially 

 the 28th); Kentucky Fossil Shells by Nettelroth, 1889 ; certain publi- 

 cations of the United States Geological Survey (especially Monograph 

 8) ; Vol. 10 of the Powell and Vol. 4 of the Wheeler (100th meridian) 

 surveys ; and professional papers nos. 16, 58, and numerous papers in 

 periodicals by Beede, Billings, Girty, Hall, Meek and Worthen, Salter, 

 Ulrich, Whiteaves, Whitfield and others. 



B. Me s azoic Species. 



1 885. Whitfield, R. P. Gastropoda and Cephalopoda of the Raritan 

 Clays and Green Sands of New Jersey. Pal. N. J., Vol. 1, and 

 Monograph U. S. Geol. Survey, Vol. 9. 



Also the following publications : Canadian Geological Survey, Meso- 

 zoic Fossils, and Contribution to Canadian Palaeontology ; New Jersey 

 Geol. Surv. Palaeontology, Vol. IV. ; Palaeontology of California, Vols. 

 1 and 2 ; Geology and Palaeontology of the Black Hills, and the publi- 

 cations of the several United States Geological and Geographical Sur- 

 veys, especially the Wheeler Survey of the 100th meridian, Vol. 4, 

 1877; the Hayden Surveys of the Territory, Vol 9 ; 3d annual report 

 of the U. S. Geol. Survey under Powell ; Bulletins 106, 133 ; the 

 Boletin de Instituto Geologico de Mexico, especially No. 24, and various 

 papers by Conrad, Cragin, Gabb, Hill, Roemer, Stanton, White and 

 Whitfield. 



C. Cenozoic Species. 



1832-38. Conrad. Fossil Shells of the Tertiary Formation and Fossil 



Shells of the Medial Tertiary. 

 1833. Lea. Contributions to Geology. 

 1890. Gregorio, A. de. Monographic Eoc. Alabama. Annales de 



Geologie et de Paleontologie de Gregorio. 

 1893. Cossmann, M. Notes Complementaires sur la Faune Eoce- 



nique de 1' Alabama. Ann. de Geol. & de Pal. — Gregorio. No. 12. 

 1895-1899. Harris, G. D. The Midway Stage and the Lignitic 



Stage, Pt. II. Bull. Amer. Pal., Vols. I. and III. 

 1890-1892. Dall, W. H. Tertiary Fauna of Florida. Pts. I. and II. 



Transactions of the Wagner Free Institute of Science, Vol, 3, 1890- 



92. 



