■^ 



UNIO. 



fOVAL. 



*pinguis. 



I 



Lea. 



Aiistralis. -Lam. Phil} DesJi. Han. 

 ffyridella Australis. Swain. 



'*Hydianus. Lea. Clienu. Adams. Han. 



*approximiis, - Lea. 



*Aztecorum. Phili. 



""'Claibornensis. Lea. Clienu. Han. 



*Po"wellii. Lea. 



*Eeeveianus. Lea. 



*luteolus. Lam. Dehay._ Han. 



Unio siliquoideus.^ Bar. Con. Adams. 



Kilst. 

 Unio inflatus. Bar.^ 

 Unio Tnelinus. Con. 

 Unio rosaceus. Delcay. 

 Lampsilis siliquoidea.* Stimp. (Agass. 



MSS.) • 

 Mya inflata. Eat. 

 Mya siliquoidea. Eat. 



Childreni.' Gray. 



pulclier. Lea-. Chenu. Han. - 



OVAL. 



*tener. Lea. ' Chenu. 



*Prevostianus. , - Lea. 



*modioliformis. 'Lea. Han. > 



*teiierus. Jiav, Han. 



*perpictus. Lea. - ! 



*radiatus. La^n. Bar. Desh. (Ency. 



Ver. T. 2.) Menke. Gould. Bins- 



ley. 'Migh. Dekay. Kiist. Han. 

 Unio Virginiana. Lam. Menke. ■ 

 Unio ohliquiradiatus. Beeve, 

 Unio radiatus.^ Speng. 

 Unio distans. Anth. 

 Mya radiata. Gmel. Wood. Dill. 



Schreih. Eat. 

 Mya oblongata. Wood. 

 Mya pictorum tenuis. Chem. 

 Lainpsilis radiata. Stimpson. (Agass. 



MSS.) - - 



Jordanicus. Bourg. Mous. 

 Unio Grelloisianus. Bourg. 



*apicinus. Lea. 



Gontierii. Bourg. 



*Bruguierianus. Bourg. 



'Dr. Philippi figures a Unio under the name of Australis, Lam. (Conchylien, Tab. 5, Fig. 5), from 

 'New Holland, and says that U. ambiguus, Parrej^ss, is the young. I did not see Lamarck's Australis, 

 when in Paris ; it was not in the Museum. 



'^ Mr. Say makes siliquoideus the same with viridis, Raf. Ferussac, in his cabinet, makes it the same 

 with /ascmi!a, Eaf. Mr. Conrad makes it the same with vittata, Eaf. Ferussac, in his "Observations," 

 states the inextricable difficulty resulting from the confusion caused by Mr. Rafinesque. See " Observa- 

 tions," p. 13, in Magazin de Zoologie. 



^ Described from a female luteolus, Lam. 

 '■^ Prof. Agassiz says, in MSS. cited by Mr. Stimpson, that this is not identical with the Ohio River 

 sjjecies usually called U. siliquoideus ; but I think they are the same. 



^ I have never seen this species, but presume, from the figure in Griffith's Cuvier, very poor as it 

 e-sddently is, that it is a distinct species. In the index, Mr. Gray inserts, in brackets (Unio Ghinensis), 

 and says it has small compressed teeth. The figure looks something like a Moiiocondylaa, D'Orbign}^ 



" Spengler, in Skriv. Nat. Hist., v. 3, cites radiatus from Midler, and as coming from the East Indies. 

 If from that part of the globe, it cannot belong to this species. 



