Extracts from the Minute-Book of the Linnean Society. 481 
company with Chitons and noticed to be of locomotive habits; the 
Chitonellus seeking retirement in a hole or cavity, but crawling away 
from its attachment on being disturbed, at about the pace of the 
common garden snail. 
For these reasons, although Mr. Reeve does not regard the other 
subdivisions proposed in the genus Chiton as of greater value than 
sectional, he considers Chitonellus as entitled to rank equally with 
Chiton in its most extended form, being in his opinion clearly distin- 
guished both in structure (as regards the condition of the mantle 
and its system of calcitication) and in habit. 
3R2 
