146 



*Unio rectus Lamarck. 



AVabash River, Ohio Eiver, White River, St. Joseph River. 

 *Unio retusus Lamarck. 



Wabash River. 



* Unio » idibundus Say. 



White River, Wabash River. 



* Unio 7-ubiginosus Lea. 



Ohio River, Wabash River, Lake Maxinkuckee. 

 ■■' Unio secuns Lea. 



W^abash River, Ohio River. 

 ■•■■ Unio solidus Lea. 



Wabash River. 

 *Z\io subovaf us Say. 



Wabash River, Ohio River, White River. 



* Unio sub7-ostratus Say. 



Wabash River, Lake Maxinkuckee, Bruiett's Creek, Vigo County, 

 Wrongly labelled Unio nasuius in the State collection. 



* Unio sulcatus Lea. 



White River, Marion County. 



* Unio tenuissimus Lea. 



Wabash River, Ohio River. 



A specimen in the State collection is labelled Unio vellum Say. 

 ■•■• Unio Iriangularis Barnes. 



Wabash River, White River. 



* Unio trigonus Lea. 



Wabash River, Ohio River. 

 ■■•■ Unio tuberculatus Barnes. 



Ohio River, Fa41s of the Ohio. Wabash River. 

 *l'nio undulatus Barnes. . 



White River, Ohio River, Wabash River, Bruiett's Creek, Vigo County. 



* Unio varicosus Lea. 



Ohio River. 

 ■■ Unio ventrieosns Barnes. 



Lake Maxinkuckee, St. .Joseph River. 



* Unio verrucosus Barnes. 



Wabash River, Ohio River, White River. 

 CixciNNATi, Ohio. December 23, 1895. 



