288 PYRAMIDELLIDiE. 



was impossible for any naturalist to recognize the object 

 he intended ; hence, we consider he has forfeited his claim 

 to priority. 



The shell is subcylindrical, narrow, tapers slightly to 

 an extreme blunt apex (the large nucleus being obliquely 

 sunken into the summit of the spire) white, glossy, and 

 semitransparent. Though smooth to the eye, a careful 

 scrutiny will detect from one to three obscure spiral ridges 

 or strife that revolve around the body in a line with the 

 upper part of the mouth, but do not extend to the extreme 

 base. There are only four or five rounded whorls, which 

 are of moderately fast longitudinal increase, and are pro- 

 foundly divided by a moderately oblique and rather broad 

 suture, above which they sometimes (but not invariably) 

 arch in so abruptly as to give a somewhat flat-topped ap- 

 pearance to the succeeding volution. The body is rather 

 short, almost cylindrical, and indistinctly angulated at its 

 periphery; its basal declination is rounded. The mouth, 

 which scarcely occupies more than a third of the entire 

 length (often, indeed, less) is subovate, acutely angulated 

 above, and rather bluntly rounded at the base or anterior 

 extremity. The outer lip is simple and acute ; above it 

 is merely convex, below it is abruptly arcuated ; within it 

 is quite smooth. The pillar lip is more or less curved, and 

 not very long ; it is narrowly reflected, and has no adja- 

 cent umbilical crevice, but at most a linear depression. 

 The fold is almost always obsolete ; when visible at all, it 

 lies rather above the middle of the inner lip, and is small 

 and peculiarly retired. Our examples measure a single 

 line in length, and fully two-thirds less across their base. 



Mr. Jeffreys has indicated the following localities : Scar- 

 borough ; Ilfracombe ; Land's End ; Whitesand Bay in 

 Cornwall ; Burrow Island, South Devon ; Guernsey ; Cork 



