THE FAMILY NAIADES. 



27 



XT} 



W 



;?; 



c 



I— I 



"^ 



O 



o 



OVAL. 



My a ovalis.* Soland. 



Mya Batava. Wood. Maton. Dill. 



Myscn Batava. Turton. 



Unio riparia. Pfeif. 



Unio pictorum. Drap., pi. 11. fig. 3. 



Unio fusculiis. M'uhl. 



Unio gibba. Muhl. Pfeif. 



Unio Labacensis. Muhl. 



Unio rcniformis. Schmidt. 



Unio fuscus. Ze/^. 



Unio consentancLis. Zeig. 



Unio amnicus. Zezif. 



Unio carynthiacus? Zeig. 



Unio decurvatus. Rossmacsler. 



Unio sinuatus. Stud. 



Unio planus. »S'/?/f/. 



Unio ater.t M/. 



Cumberlandianus. Lea. 



Smithii.J Gray. 



vibex. Coil. 



Muhlfcldianus. Lra. 



* On the authority of Dillwyn. 

 f On the authority of Fcrussac. 



\ Never having seen this shell, I place it here on the authority of Mr. 

 Gray. — See his figure in Grifiith's Cuvier, Vol. XII. 



