iN 
Crenulata, 241. NUMMULIN A. 
Nautilina, 241. Marginata, 242. 
The author, in common with most Conchologists, 
has felt the want of good figures of the British shells, 
the majority of the delineations being inadequate for 
distinguishing the species. He proposes, in the event 
of there being a sufficient number of subscribers, to 
publish the figures of every British marine shell, en- 
graved by a first rate artist, at the moderate price (to 
subscribers only) of fifteen shillings a copy. As the 
production of this desideratum to British concholo- 
gists will entirely depend upon there being at least 
fifty subscribers, the author will feel obliged to those 
gentlemen who may he willing to become so, if they 
will at their earliest convenience announce their inten- 
tion to him, under cover to the publisher. 
