no 



BELLEROPHON costutus. 



TAB. CCCCLXX.— /o. 4. 



Spec. Char. Globose, expanded, siibcarinated, 

 with slender sharp ribs diverging from the 

 undefined band ; axis perforated. 



Syn. Parkinson Org. Rem. Vol. p. 3,141, 1. 10, 

 /. and 7. 



The carinated form, sharp ribs and uadefined but 

 broad convex band, distinguish this; the aperture is 

 wide and much arched, and the sinus in it deep, leaving 

 bent striae upon the band. 



We have but one specimen of this, probably from 

 Derbyshire. Parkinson seems to consider it the same as 

 Martin's hiulcus, and it may possibly be his fig. 2, and 

 var. a. but he describes the band as flat. 



