NORTH AMERICAN CONCHOLOGY. 



T. J. Whiticmorc— (From same.) Notes on— 



Page. 



193 



Name. 



Piano rbis corpulentus. 



Locality. 

 Vermont. 



Dr. A. A. Goilld. — (From same.) Descriptions of- 



Page. 



196 

 196 

 196 

 196 

 196 

 196 

 196 



Tage. 



396 



396 



396 



396 



396 



Solecurtus nitidus Gould. 

 Mactra ovalis Gould. 

 Bulla debilis Gould. 

 obstricta Gould. 

 Limnaea chalybea Gould. 

 Valvata pupoidea Gould. 

 Planorbis hirsutus Gould. 



Page. 



196 



197 



197 



197 



197 



197 



Natica flava Gould. 



canaliculata Gould. 

 Lacuna neritoidea Gould. 

 Fusus scalariformis Gould. 



tornatus Gould. 

 Buccinum rosoceum Gould. 



Name. 



Notes on Murez tricolor. 

 " bicolor. 



" Cardium californianum. 



" Trochus vittatus. 



" Bulimus undatus. 



Locality. 

 California. 

 California. 

 California. 

 California. 

 California. 



Prof. C IS. Adams. — (From same.) 



Page. Name. Locality. 



396 Notes on Jaminia producta Adams. Andover, Mass. 



396 " Ancylus fuscus Adams. Andover, Mass. 



396 " Pleurotoma plicata Adams. New Bedford. 



396 " Tornatella puncto-striata Adams. New Bedford. 



396 " Pholas costatus. New Bedford. 



KirfSaild. — Fragments of Natural History: by J. P. Kirt- 

 land, M. D., Prof. Theol. and Prac. Phys., in Med. Coll. Ohio, 

 Cincinnati. No. 1. Habits of the Naiades. (Am. Journ. Sci. 

 and Art, 0. S., vol. xxxix, No. 1, pp. 164-168. April-June, 

 1840. 



[Notes on sexual difference and byssus, with a list of species of Unio, 

 Alasmodon, and Anodon examined.] 



Page. 



165 



165 



165 



165 



167 



Unio pileus Lea is male of U. personatus Say. 



tenuissimus Lea is female of U. velum Say. 



donaciformis is female of Zigzac. 

 Margaritana deltoidea Lea is male of Alasmodon calceola Lea. 

 Unio zigzag (young), figure a. b. 



