96 GENUS XIX. NA VTILUS. 



towards the spiral part (see Park. Organ. Rem. 3. p. 145. 

 t. 10. f. 10). 

 Fasciolites. a subcylindrical shelly or bony body, about 

 half an inch in length, rather tapering at the ends, and 

 formed by the spiral arrangement of perpendicular con- 

 camerated tubes, the tapering end of each of which is 

 obliquely and transversely folded on that of the preceding 

 one (see Park. Organ. Rem. 3. p. 158. t. 10. f 28 to 

 31). 



