274 



Shell Life 



hidden 



long, 



yellow 



crown 



which 



It is 1 inch 

 greenish- 



Soft Bubble-shell (twice nat. size) 



except the 

 and pillar, 

 are white. 

 There are large side 

 lobes to the foot, 

 which are turned up 

 on occasion so as to 

 partially envelop 

 the shell. It is a 

 local southern 

 species, found on 

 sandy and muddy 

 shores from half-tide 

 down to about 15 

 fathoms. It some- 

 times uses the side 

 lobes of the foot as 

 swimming organs. 



The Soft Bubble- 

 shell {Acer a hid- 

 lata) is thin, flexible, 

 almost transparent, 

 white tinged with 

 green. It is almost 

 entirely covered by 

 the side lobes of the 

 foot, and partly by 

 the mantle. The 

 animal is grey or 

 whitish, with minute 

 dots of lighter and 



