20 



DOUBTFUL AND EXTRA-LIMITAL SPECIES. 



Unio anodontoides Lea. 

 ru-lal lb Con. 

 canadensis Lea. 

 cariosus Say. 

 cuneoliis Lea. 

 ellipsiformls Con . 

 iris Lea. 

 latecostatus Lea. 

 negatus Lea. 

 pen ii us Con. 

 perplexus L«'a . 

 gibbosus Raf. 



Unio pustulatus Lea. 



radiatus Lam. 



subovatus Lea. 



subro.tundue Dea. 



t appanianus Lea. 

 Margfantina undulata Say. 

 Auodnnta buchanensis Lea. 



ferruginea Lea' 



llu\ iatilis Dill. 



cataracta Say . 



lacustris Lea 



y ]iiuiaiia Lea. 



schaefferiana Lea. 



f\PPE,NDIX II. 



List of contributors to the census of Michigan mollusca. 



A. II Boies, 



< . A. Davis, 



T. Jansen, 



Kent Scientific Institute by C. A. Whitte- 



more, 

 R. J. Kirkland, 

 A. C. Lane, 

 C. I). McLouth, 

 Michigan Agricultural College by Dr Manly 



Miles, 

 C. E. Miller, Jr., 

 W. Miller, 

 R. II. l'ettit, 

 Elwood Pleas, 



Hudson, Mich. 

 Alma, Mich. 

 Chicago, 111. 



Grand Rapids, Mich. 

 Grand Rapids, Mich. 

 Houghton, Mich. 

 Muskegon, Mich. 



Lansing, Mich. 

 Grand Rapids, Mich, 

 Grand Rapids, Mich. 

 Agricultural College, Mich. 

 Dunreith, Ind 



St. Mary's Acadamy by Sister M. Catherine, Monroe. Mich 



State Normal School, by W. H. Sherzer, 



Frederick Stearns, 



L. II. Streng. .... 



Jerome Trombley, 



University of Michigan by 11. E. Sargent, 



Bryant Walker, .... 



Frank E. Wood, 



Ypsilanti, Mich. 

 Detroit, Mich. 

 Grand Rapids, Mich. 

 Petersburg, Mich. 

 Ann Arbor, Mich. 

 Detroit, Mich. 

 Bay City, Mich. 



