78 Trans. Acad. Sci. of St. Louis. 



mar, Barton Co. (18) ; Pond, Nevada, Vernon 

 Co. (7); Pond, Springfield, Greene Co. (13); 

 Pond, Current River, Van Buren, Carter Co. 

 (14); Greenfield, Dade Co. (6); New Madrid, 

 New Madrid Co. (1) ; Black River, Poplar Bluff, 

 Butler Co. (2); Branch St. Francois Co. (10); 

 Big River, St. Fran(^'ois Co. (5) ; Branch, Jack- 

 son, Cape Girardeau Co. (12) ; Stream, Aurora, 

 Lawrence Co. (27); Godby's, Cooper Co. (10); 

 Stone Co. (Stearns). Pond, Fern Glen, St. 

 Louis Co. (10) ; Spring branch, Potosi, Wash- 

 ington Co. (32) ; Blees Academy lake, Macon, 

 Macon Co. (18) ; Small branch, Chillicothe, Liv- 

 ingston Co. (23) ; Branch of Salt River, Paris, 

 Marion Co. (23) ; Spring branch, Ironton, Iron 

 Co. (20) ; Pond, Allanville, Cape Girardeau Co. 

 (10) ; Spring branch, Ste. Genevieve, Ste. Gene- 

 vieve Co. (45) ; Stream, Jackson, Cape Girar- 

 deau Co. (11) ; Pond, Rivermines, St. Francois 

 Co. (20) ; Spring branch, Hannibal, Marion Co. 

 (35) ; Callaway Co. (Greger) ; Dent Co. (15) ; 

 Hinkston Creek, Boone Co. (12). 



Postpliocene : — Below Platte river (Hambach). 



Mr. 0. A. Crandall, of the Missouri Trust Company of 

 Sedalia, Missouri, on becoming a member of the Amer- 

 ican Conchological Society, in accordance with the plans 

 of that society, adopted a specialty — the very difficult 

 one of the American Physae. He gave much investiga- 

 tion and study to the subject, and in July, 1901, he com- 

 menced the publication in the Nautilus of the results of 

 his studies, during the publication of which he suddenly 

 died. He examined and labelled all the Physas that 

 Avere then in my collection, and the present list is made 

 in accordance with his determinations. Before that time 

 I had supposed that some of the lots were heterostropha, 

 but Mr. Crandall did not so identify any lot from Mis- 



