153 



ADDITIONS TO THE LIBRARY. 



Proceedings of the Providence Franklin Society, Vol. I. Part I., 

 for April, 1846. From the Society. 



July 1, 1846. 

 A. A. Gould in the Chair. 



A letter from George Ditson, Esq. of Neuvitas, Cuba, ac- 

 companying a donation, was read. 



Dr. Gould described the following new species of Sipho- 

 naria, Emarginula, and Fissurella, from the Shells of the 

 Exploring Expedition. 



SiPHONARiA coRNUTA. Tosta rudis, fuliginosa, valde depressa, 

 per-inequilateralis, radiatim striata, apice submediano, costis ad 

 15 inequalibus, ultra marginem prolongatis, preecipue costa supra- 

 siphonali : cavitas parva, minime profunda, dextrorsum effusa ; 

 limbo marginali expanso, albo, vel fusco inter costas radiato. 

 Long. 1, lat. ^^, alt. -^ poll. Hah. Mangsi Islands. 



Allied to S. atra, to which it may possibly be traced by its va- 

 rieties ; but it is more elongated, less symmetrical, and the ribs, 

 which are much more numerous on the left than on the right side, 

 surpass the margin to a much greater extent. 



SiPHONARiA INCULTA. Tosta parva, crassa, irregularis, de- 

 presso-conica, costulis 20-24 radiata ; apice sub-central i : cavitas 

 profunda, latere sinistro prsecipiti, latere dextro declivi ; fundo 

 fusco nubeculato ; cicatrice musculari profunda ; limbo marginali 

 expanso, sericeo, hepatico ; margine costulis dentato. Long, 

 /jj, lat. J-^, alt. I poll. Hah. New Zealand. 



A small, rugged-looking species, easily distinguished by its 

 irregular, one-sided form, and its liver-brown interior. 



SiPHONARiA LATERALIS, (CouTHOUY MS.) Tosta parva, fra- 

 gilis, inequilateralis, perobliqua, oblongo-ovalis, olivacea, sursum 



PROCEEDINGS B. S. N. H. 15 AUGUST, 1846. 



