UNIO. 



63 





K 



O2 

 O 



OBLONG. 



Mexicanus. Phili. 



*ampullaceus. Lea. 

 *mutabilis. Lea. 

 *^Ethiops. Lea. 



*auratus. Swain. 

 Nida aurata. Sivain. 

 Unio obtusa. 1 Fer? 

 Unio depressus. D'Orb. 

 Unio Cliiloensis. Phili? 

 Unio Gassiesii. Grat. 

 Unio frarjilis. Swa in. 



*atratus. Sow. Han. 

 Nida atrata. Swain. ' 

 Nida frayilis. Sivain. 

 Unio auratus. Phili. 

 Unio Chilensis. Gray. 

 Unio Molinse. Phili. 



*lepidk>r. 4 Lea. 

 Unio lepidus. Lea. 



*Casablancae. Phili? 

 *Araucanus. Phili. 

 *confertus. Lea. Han. 

 *legubris. Lea. Han. 

 *piceus. Lea. 



OBLOXtt. 



*insulsu3. Lea. 

 *obnubilus. Lea. 

 *Geddingsianus. Lea. Chenu. 

 *similis. Lea. 

 *tetricus. Lea. 

 *Whitcianus. Lea. 

 *Kullethensis. Lea. 

 *Mardinensis. Lea. 

 *fuliginosus. Lea. 

 *paliatus. RaveneVs Letter. 

 *Strebelii. Lea. 

 *camelopardilis. Lea. 

 *Tuomeyi. Lea. 

 *Ckatbamensis. Lea. 

 *tortivus. Lea. Chenu. 

 *purpiirellu.s. Lea. 

 occidentalis. Con. 



Watereensis. Lea. 



' Baveneli.* Con. 



1 Fide D'Orbigny, Mag. de Zoology, 1835. 



2 D'Orbigny says this is the depressus of Lesson, and figured and described by Lesson in the ]'ni/n : i-- 

 de la Coquille. Now the description of Lamarck answers to the figure of Lesson, and I ani disposed to 

 think that the two are the same. I do not know where Ferussac described obtn*u. 



3 A specimen of U. auratus from Chiloe, South America, sent to me \>y Dr. Vandembusch from 

 Bremen, was labelled U. Chiloensis, Philippi. 



4 Lepidus being preoccupied by Dr. Gould for a Florida species, I propose I>']iidir for my -!> 



5 An authentic specimen was given to me by Dr. Dunker in Cassel, and although very close to alratu*, 

 I think it will prove to be a distinct species. 



6 Prof. Ravenel's name being previously used for a I'nio (Aim-i: I'liil. S.>.-. 7V/;n.--.. vol. v.). it becomes 

 necessary to change Mr. Conrad's name, which I do, to that of the river in which it was found. 



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