262 



is however very different from either of the above-men- 

 tioned genera, and its species form a very natural group : 

 they are ventricose, inflated, subglobular; spire nearly 

 depressed, and on a level with the largest whorl ; sub- 

 stance very thin, and all of them have transverse cir- 

 cles on the exterior, causing the interior to be grooved, 

 and the right margin of the aperture dentated or ere- 

 nulated along its whole length; opening oblong, notch- 

 ed at the base. They sometimes attain a great size. 

 Dolium galea Dolium fasciatum 



olearium pomum 



maculatum variegatum 



Dolium perdix. 



BUCCINUM. 



BUCGINUM PAPILLOSUM Linn 



Mawes Linn. pi. 24, / 2 . Sf 5. 



Brlguikrl, impressed with the necessity of reform- 

 ing the too widely extended genus Buccinum of Lin 

 naeus, constituted from it his genera, Cassis and Tere- 

 bra. There yet remained a great number of distinct 

 species intermingled, which rendered the generic char- 

 acters of the C. Buccinum very vague and inconsistent. 



