32 BULI^ETIN 5 302 



126 FOSSIL SHELLS. 



I^ength seventeen-twentieths, breadth nine- 

 tenths of an inch. 



Several .specimens are in Mr. Finch's collection 

 in tolerable preservation, but very fragile, though 

 not thin. I obtained a species of Natica at Mul- 

 lica Hill, New Jersey, a few years since ; but it is 

 so changed by casualties, and by the infiltration 

 of ferruginous matter, that its specific alliance 

 with the present species cannot be appreciated. 



OLIVA. 



Several specimens occur about the length of one 

 inch and two-fifths, but too imperfect to admit of 

 any decision as to the species. 



BUCCINUM. 



I. ^. porcinum. PI. vii. fig. 3. Subovate, acute, 

 slightly undulated, and spirally striated ; labrum 

 toothed. 



Description. Shell with numerous, subequal, 

 slight undulations, disappearing on the body whorl, 

 and about seventeen transverse, little elevated 

 striae : whorls nearly six, but little convex : suture 

 very narrow, consisting' of a mere indented line : 

 apex acute : aperture moderate, rather more than 

 half the length of the shell : labium covering the 

 columella, concave : labrum not thickened ; on the 

 inner submargin with striseform teeth. 



[J. A. N. S., Phila., ist Ser., Vol. IV, 1824.] 



