109 



AURICULA pyramidalis. 



TAB. CCCLXXIX. 



Spec. Char. Ovate, pointed, smooth ; spire 

 pyramidal ; volutions rounded above, the 

 last subcylindrical short; aperture half the 

 length of the shell, with a sharp outer lip, 

 and two plaits upon the columella. 



A THICK rather clumsy formed shell, with a prominent 

 base and small umbilicus ; the plaits upon the cohimella 

 do not project much, they are near together, the inner 

 hp is rather thickened, the outer one not at all. 



As the Genus Auricula is supposed to contain only 

 land shells, it may be questioned whether the subject of 

 this plate be properly arranged among them ; but it 

 agrees well with Lamarck's second division, formerly 

 called by him Conovulus; and it is not unlikely that a 

 formation of so late a date as the Crag appears to be, 

 should contain land shells, since it is found to hold 

 several marine species precisely like those of the present 

 day, altliough land shells have not been hitherto suspec- 

 ted in it. The Auricula incrassata, and A. turgida, tab. 

 163. found in the Green Sand, ought in all probability, 

 to be removed to another, perhaps a new. Genus. We 

 first received this species from Mrs. Cobbold of Ipswich, 

 so long ago as in 1812. (see fig. 2.) but could not be 



