13 



42. Sph. Jeannottii Normand. 



43. Sph. laeustre Ferussac. 



43. a. Cyc. calyculata Drap.. 

 43. b. Cyc. Perczeii Villa... . 



.France, 

 ex auct. 



.Bordeaux, Agen, 



France ; Portugal ; 

 Milan ; Sicily. 

 England. 

 Oise, France. 

 Spain. 

 ex auct. 



AFRICAN SPECIES. 



44. Sph. feiTugineum Krauss Africa. 



FOSSIL (TERTIARY) SPECIES. 



45. Sph. concinnum Sowerby Fuveau, France. 



46. Sph. Gardanense Matheron Fuveau, France. 



Anomalies. 



X. Sph. clandestinum da Costa S. America. 



ex Jay, a marine shell. 



Y. Sph. rhomboideum Say Cambi idge, Mass. 



A monstrosity, having 

 a suture on the ba- 

 sal margin as in Pi- 

 sid. sinuatum, Bgt. 



Pisiflium, Pfeiffer. 



NORTH AMERICAN SPECIES. 



1. P. Virginicum. 



2. P. Adamsii 



2. a. Cyc. niiida Mighels. 



, Bourguignat . Quebec. 



Pittsfield, Mass; West- 

 field, Mass; Spring- 

 field, Conn. ; Sara- 

 toga Lake ; Mo- 

 hawk river ; Hud- 

 son river ; Buffalo ; 

 Greenwich, N. Y. ; 

 Baltimore ; Penn- 

 sylvania ; Ohio ; 

 Wisconsin ; Geor- 

 gia. 

 Prime Maine. 



Norway, Me. 



ex auct. 



