UXIO. 



.7.1 



c 

 ?j 



g 



SI 



i 



WIDE. 



j\Tija pictorum. Lin. Miil. Born. 



Poli. Schriit. Pennant. Dill. 

 Wood. Mat. Schreib. Da Cost. 



A Iten. 

 Musculus angustior. List. Hist. Ani- 



malia, p. 149. 

 My a corru'jata Maroccana* Cltem. 



maryaritica. Klein. 



auyusta. Klein. 



Long thick horse mussel. Petiv. 

 Mya nodosa. Martini. Lin. Schreib. 



Wood. Dill. 

 Mysca pictorum. Turt. 

 Potomida sicula. Swain? 

 Unio delphinus. Spenrj. 

 Unio inflatus. Stud. 

 Unio rostratus. Lam. Pfeif. Mich. 



Desh. Bouil. Gras. Puton. 



Potier. Brown. Villa. Waard. 



Chenu. Fitz. Gras. 

 Unio manca. Lam. Millet. Dup. 



Bourg. 



Unio castaneus. Mill. 

 Unio elongatulus. Miihl. Rossm. 



Potier. Por. Dup. Villa. 

 Unio Turtonii. Payr. Desh. Phili. 



Dup. Bourg. 



Unio lobatata. De Cr. and J? 

 Unio Capigliolo. Payr. Desh. More. 



Dup. Rossm. Grat. Moq. 

 Unio Requienii. Mich. Rossm. Gas- 



sies. Potier. Dup. Gras. Grat. 



Mous. Bourg. Stab. Moq. 

 Unio Deshayesii. Mich. Desh. 



Rossm. Broivn. Gras. Grat. 

 Unio platyrinchoideus. Dup. Bourg. 



Kuster. 



Kuster. 



Kiister. 

 Villa. Por. 

 Villa. 



WIDB. 



Unio limosus. Nil. Rottm. 

 Unio lonyirostris. /<'.<//. Potier. 

 Por. Rossm. Villa. Schmidt. 

 Unio lemovicense. Fer. Menke. 

 Unio retwus. Held. 

 Unio ventrosus. Kuster. 

 Unio leviyatus. 

 Unio latirostris. 

 Unio concinnus. 

 Unio corrosus. 

 Unio Spinelli. 

 Unio pallens. Parreyss. Kiist. 

 Unio dactylus. Morelet. 

 Unio mucidus. Morelet. 

 Unio arcuatus. Bouch. Dup. 

 Unio Ardusianus. Reyniis. 

 Unio Muelleri* Rossm. 

 Unio ponderosus. Spitzi. Rossm. 

 Unio graniger. Zieg. 

 Unio decipiens. Zieg. MSS. Bourg. 

 Unio Nathusii. Kiist. 

 Unio vindiflavus. Kiist. 

 Unio Petrovichii. Kilft. 

 Unio dubius. Fitz. 

 Unio Ron-sii. Dup. 

 Unio proechus. Bourg. 

 I nio actaphilus. Bourg. 

 Unio vulgaris. Stab. 

 J "// t'f> Blauneri. Shutt. Stab. 

 ( 'nio subreneformis. Bourg. 

 I' n in /'(/)/// inatianus. Bourg. 

 I 'nio Graellsianus. Bourg. 

 Unio Courquinianus. Bourg. 



*elongatulus. Pfeif. Han. 

 Unio Aradse. Phili. 



1 Chemnitz figures this shell, vol. vi. table 3, Figs. 23 and '24. From the description and outline. I 

 have little doubt of its being a young pictorum, more than usually undulated in the region of the bonk-. 

 Its being rugose over the whole surface, as mentioned by him, is not evidence against its being such. 

 As the first growth subsequently forms the beak of the shell, it ought of course to be rugose, if that be 

 the character of the shell. The inside view is without teeth, but this is doubtless the fault of the drafts- 

 man or engraver, as the author speaks of the hingo being like the common mussel. 



- I suspect this will prove to be the same as elonyatnln*, 1't'eit'., which m:iy itself be only a var. of 

 um. Swainson and Pfeiffer obtained them from Sicily. 



8 Fide Philippi. Michaux's figure has more the appearance of U. Bata>-u?. 



4 I think this will be found to be a deformed /ii'-f,,rum. 



