TERMS FOR ADVERTISING. 



W^Em W^TiB SHliLLS W^I^Tig)* 



CoxcHOLOGiSTS or Dealers having FRESH WATER SHELLS from any part 

 1 ■"■"'' '■ ""^cies 



f ibrarg of % gtusntm 



OP 



COMPARATIVE ZOOLOGY, 



AT HARVARD COLLEGE, CAMBRIDGE, MASS. 

 J^ounlieli bs pribate subscrfjjtion, fn 1861. 



Deposited by Louis Agassiz. 



No. J 4 /P 



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alers. 



Part 



, Sea 

 ind 6 

 alers. 



I and 

 alers. 



ncient 

 til 15 

 .Vol. 

 alers. 



6 mos. 



870. 2 Vols. 



MONOGRAPH OF THE LIMNIADES, 



And other Fresh "Water Univalve Shells of North America. 



By Prof. S. S. Haldeman. 



Published in 8 Nos. 8vo, with 40 beautifully colored plates ; illustrating the 

 genera Lymnea, Planorbis, Physa, Paludina, Amnicola, Ancylus, &c. 

 A few copies of this rare and valuable work for sale by the Conchological 

 Section of the Academy of Natural Sciences. 



