22 



EUOMPHALUS Pugilis. 

 TAB. DCXXl.— ^g^. 2, 3, & 4, 



Spec. Char. Concave both above and below ; vo- 

 lutions gradually increasing, rounded, with two 

 rows of tubercles, one above, the other below. 



Syn. Euomphalus Pugilis, PhilL Yorks. 225. 



L HE volutions of this Euomphalus are somewhat less 

 angular than those of E. pentagonalis^ and the upper 

 side is generally, but not always, more concave. The 

 tubercles beneath are sometimes very slightly prominent 

 or irregular, when it approaches to E. bijrons, Phill. loo. 

 cit. 225. t. 13. f. 4, which has tubercles on the upper side 

 only, and is probably a variety of it ; they are both found 

 at Bolland. The E. Pugilis also occurs in the county 

 of Kildare. E. nodosus, M. C. tab. 46, having tubercles 

 on the under side only, may be a third variety; the 

 three do not differ materially in anything but the num- 

 ber of tubercles, which vary very much in size even on 

 the same individual. 



I am indebted to Mr. Gilbertson for the specimens 



figured. 



