64 



UNIO. 



Un 

 Un 

 Un 

 Un 

 Un 

 Un 

 Un 

 Un 

 Un 

 Un 

 Un 

 Un 

 Un 

 Un 

 Un 

 Un 

 Un 

 Un 

 Un 

 Un 

 Un 

 Un 

 Un 

 Un 

 Un: 

 Un 

 Un 

 Un 

 Un 

 Un 

 Un 

 Un: 

 Un: 

 Un 

 Un 



o Pfeifferi. Dunker. 



o PMlippii. Dup. 



o pinax. Ben. 



o plagiosoma. Ben. 



o planivalvis. Morelet, 



o plombarius. Villa. 



o porrectus. Con. 



o prasinatus. Con. 



o preciosus. Fer. 



o pruneosus. Zieg. 



o psoricus. Morelet. 



o Pugio. Ben. Blan. 



o pulchellus. Fer. 



o purpuriatus. Say. 



o radula. Ben. Blan. 



o rectilinearis. Sow. 



o Reyniesii. Mich. 



o Rothi. Bourg. 



o Rousii. Dup. 



o rugosus. Anton. 



o Schlegelii. Martens. 



o Schwerzenbachii. Bourg. 



o Scobina. Ben. Blan. 



o scutulatus. Morelet. 



o scutum. Soiu. Reeve. 



o semiplicatus. Troschel. 



o semiquadrata. Soiu. 



o Seneltensis. Gass. 



o Sennaarensis. Kiist. 



o simonis. Trist. 



o Sitifensis. Mbrch. 



o smaragdites. Ben. 



o solidulus. Phili. 



o spheniopsis. Morelet. 



o Steveniana. Krynichi. 



Unio Taumilapanus. Con. 



Unio testudineus. Morelet. 



Unio testudinarius. Speng. 



Unio Theca. Ben. Blan. 



Unio trieinbolus. Ben. 



Unio trirostris. J5ew. 



Unio truncatosus. Potier. 



Unio truncatus. Speng. 



Unio uber. Cow. 



Unio Valdivianus. Phili. 



Unio venustus. 1 J/o?-e. 



Unio vellicatus. Reeve. 



Unio Teyberi. Menke. 



Unio Zimermani. Stentz. Potier. 1 



Unio ■ . Adams. 



The following species are from the Cretaceous, 

 Tertiary, &c: — 



Unio abbreviatus. 3 Goldfuss. 



Unio abductus. Phili. 



Unio acutus. (Anthracosta. King.") Sow. 



Flem. 

 Unio aduncus. Soiu. Mart. 

 Unio agrestis. Brown. 

 Unio alasformis. Brown. 

 Unio alatoides. iea. 

 Unio Alpinus. Mathe. Brown. 

 Unio ambiguus. Sow. 

 Unio amygdala. Brown. 

 Unio angustatus. Bronn. Mus. Stras- 



burg. 

 Unio anodontodes. Noul. 

 Unio Ansticei. (Myacites. Bronn.) Soio. 



1 This name being preoccupied by me, and the name of Morelet being already used by Deshayes, I 

 propose the name of oblitus for it. 



2 Deshayes, in Jacquemont's Voy. to India, t. xviii. Fig. 3, gives an Iridina (new), and the Unio 

 rorrugatus, marginalis and cceruleusf without names or descriptions! 



In a catalogue of fresh water and land shells, Ferussac says that a Unio (species uncertain) was 

 found in Berg River near the Cape of Good Hope. 



3 M. De Koninck, Foss. de Curb, de Belgique, has made a new genus ( Cardinia) in which he places 

 abbreviatus, robustus, carbonarius, antiquus, subconstrictus, uniformis, acutus, atratus, ^>haseohis, and 

 tellinarius. Pictet, in Trade Palaeontologie, says he has never found the family anterior to the Wealden, 

 v. iii. p. 528. 



4 Mr. Kiug formed this genus in 1844, for the Uniones of the Coal Formation. It is supposed there 

 are forty species known. 



