NOTICE* 



In the last No. I remarked that the Alasmodonta con- 

 fragosa, Nob. was found by Mr. Barabino near the city of 

 New Orleans ; this is an error altogether my own and 

 which I thank that gentleman for enabling me to correct. 

 He obtained his specimens from Bayou Teche in the Pa- 

 rish of St. Mary, Louisiana, about two hundred miles 

 N. N. W. from New Orleans. I did not suppose they 

 were found in the Mississippi, and my interesting corres- 

 pondent says ''I have not yet discovered any bivalves in 

 the Mississippi, (near New Orleans) although I have tried 

 two summers successively, with an instrument made for 

 that purpose." 



The Ampularia urceus, L. (rugosa Lam.) is stated in 

 the books, to inhabit the Mississippi river ; but I have nev- 

 er been so fortunate as to find it, or to gain any informa- 

 tion relative to it there. Mr. O. Evans did me the favor 

 to make enquiry at various places on that river and to ex- 

 hibit as somewhat similar, a coloured plate of the A. glo- 

 bosa, Swains, to persons from whom information might 

 be expected, and amongst others to some indians, who in 

 general are known to be accurate observers ; but no one 

 had seen any similar shell in the waters of the Mississippi. 

 I am therefore much inclined to believe that the species is 

 a native of some of the more southern rivers, probably 

 those of Texas. Any information in relation to it. or spe- 

 cimens of the shell, will be very acceptable. 



* * * Since the publication of tho preceding No. wo have had to regret the 

 decease of Mr. Tiebout. engraver for this work ; but it is hoped that tbii be- 

 reavement will not much retard the publicatioB of the work in future. 



