8. TRANS. OF THE ACAD. OF SCIENCE. 
Locality.—Moreau and Grand Rivers. 
Rosre.taria AMERICANA. 
volvin ng strie, of whi ich dors are ib ut vei in the space between 
e two carine; strie below the carine rather sharper than those 
above ; : aperture elongate subtriangular. 
Length of last volution, 63 lines; width, 53 lines (not inclade 
ing the prolongations of the lip, which are broken off) ; length of 
aaa 43 lines. 
Locality.—Moreau and Grand Rivers, 
. CEPHALOPODA.. 
wonrres: Garrrnt. 
2 (nom seinber .unknow wn) slightly em- em- 
rausverse section rate-sutgon uadrate ; -——- with a 
‘narrow keel, on each side of which is a well 
than t e keel: = 
