7 2 



Bulletin 35 



2,2,0 



Page 88 



gradually increasing from the smaller end, which is annulate, 

 becoming smooth towards the middle of the shell ; the 

 lower half smooth, shining, rather suddenly thickened near 

 the aperture, to form which it as suddenly contracts to a 

 diameter not greater than that of the smaller third of the 

 tube. 



There are no very distinct characters by which to separate 

 this annelid case from D. planum of the European Eocene. 

 I have thought it as well nevertheless to indicate its 

 presence in the Jamaica tertiaries under a provisional name. 



