THE FAMILY NAIADES. 



37 





WIDE. 



Unio Tiirtonii. Payraud. 

 Unio Capigliolo. Payraud. 

 Unio Requienii. Mich. 

 Unio Deshayesii. Mich. 

 Unio limosa. A^^7. 

 Unio longirostris. Zeigl. 

 Unio Limoviansc.se. -Per. 



elongatus. Pfeif. 



productus. Con. 



nasutus. Say. Barn. Swain. 

 Unio rostratus. Valen. 

 Mya nasuta. Wood. 

 Unio subrostralus ? Say. 



Fisherianus. Lea. 



Jayensis. Lea. 



lugubris. Lea. 



marginalis. Lam. 



Unio anodontina. Lam. 



iris.* Lea. 



Unio nebulosus. 



Con. 



* Mr. Say in his "Synonymy" gives iris as a synonym to his siibrostra- 

 tus. If they were the same I would be entitled to precedence, as my descrip- 

 tion bears date March 1829, while his is January 1831. His description, 



