NORTH AMERICAN CONCHOLOGT. 



13 



T. J. "Whittemore.^ — (From same.) Notes on — 



Piige. Name. 



11)3 Pianorbis corpulentus. 



Locality. 

 Vermont. 



Dr. a. a. Cwould. — (From same.) Descriptions of — 



196 

 196 

 196 

 196 

 196 

 196 

 196 



rage. 



396 



396 



396 



396 



896 



Solecurtus nitidus Gould. 

 Mactra ovalis Gould. 

 Bulla debilis Gould. 

 obstricta Gould. 

 Limnsea chalybea Gould. 

 Valvata pupoidea Gould. 

 Pianorbis hirsutus Gould. 



Page. 



196^ Natica flava Gould. 



197 canaliculata Gould. 



197 Lacuna neritoidea Gou/ J. 



197 Fusus scalariformis Gould. 



197 tornatus Gould. 



197 Buccinum rosoceum Gould. 



Name. 



Notes on Murex tricolor. 

 " bicolor. 



" Cardium californianum. 



" Trochus vittatus. 



" Bulimus undatus. 



Locality. 

 California. 

 California. 

 California. 

 California. 

 California. 



Prof. C B. Adams. — (From same.) 



Page. 



396 



396 



396 



396 



396 



Notes on Jaminia producta Adams. 

 " Ancylus fuscus Adams. 



" Pleurotoma plicata Adams. 

 " Tornatella puncto-striata Adams. 

 " Pholas costatus. 



Locality. 

 Andover, Mass. 

 Andover, Mass. 

 New Bedford. 

 New Bedford. 

 New Bedford. 



SsLirtland. — 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 diflference and byssus, with a list of species of Unio, 

 Alasmodon, and Anodon examined.] 



Page. 



165 Unio pilaus Lea is male of U. personatus Say. 



165 tenuissimus Lea is female of U. velum Sai/. 



165 donaciformis is female of Zigzac. 



165 Mnrgaritana deltoidea Lea is male of Alasmodon calceola Lea, 



167 Unio zifjzag (young), figure a. b. 



