204 



Middlebury County Agricultural Society. By James Barratt. 

 8vo. pamph. Middletown, Conn. From the Author. 



Essay upon the Wheat Fly, and some species allied to it. 

 8vo. pamph. Albany, 1846. By Asa Fitch. Author. 



Silliman's American Journal of Science and Arts, No. 7, for 

 January, 1847. Editors. 



Fourth Bulletin of the National Institute. 8vo. pamph. Feb- 

 ruary, 1845 to November, 1846. National Institute. 



Annals and Magazine of Natural History, No. 121, for De- 

 cember, 1846, and Nos. 122 and 123, for January, 1847. 8vo. 

 pamph. Courtis Fund. 



Gray's Genera of Birds. Parts 32 and 33. London. Audu- 

 bon Fund. 



February 3, 1847. 

 Dr. Storer, Vice President, in the Chair. 



The following species of Cyclostoma, from the collection 

 of the Exploring Expedition, were presented by Dr. Gould. 



Cyclostoma ttara. Testa solida, turbinata, rudis, distorta, 

 sordide alba, late umbilicata : spira anfr. 5 laxis, rotundatis, 

 spiraliter liratis, supernis undulatis ; inter liros lineis incremen- 

 talibus conferte clathratis : apertura circularis, peristomate sim- 

 plici. Lat. f, alt. ^ poll. Hah. Upolu. 



This rather large specie? stands at the head of a group of rude 

 and very variable species from the Pacific Islands. They have 

 a bony structure, are coarsely indented, and grooved spirally, 

 often have the whorls nearly disjoined, and the umbilicus so 

 large as to approximate to Solarium. 



Cyclostoma strigatum. Testa solida, orbiculato-conica, pal- 

 lide beryllina, supra costulis cingulata, infra sub-planulala, um- 

 bilico ample et carina acuta impendente limitato perforata : 

 spira anfr. 5 convexis, sutura bene discretis, ultimo propc aper- 

 turam despecto, fere disjuncto : apertura circularis ; peristomate 

 simplici, everso, acuto. Lat ^^g, alt. fV poll. Hah. Upolu. 



Not half so large as the preceding, and may be known by its 



