f) Animal of Bulla plumula, p. 214. 



G. h.s protruded foramen. H. H. the 

 lower lamina, or border of the 

 fuftentaculum. 



I. The upper lamina, under the mid- 

 dle of which the (hell is conceal- 

 ed. K. A plumofe feeler. L. 

 the tentacula, at the bafe of which 

 the eyes are placed. 



6 Animal of Bulla haliotoidea, p. 2 1 1 . 

 M. The membranaceous (hield, 

 under which the iliell is conceal- 

 ed. N. a finus, through which 

 an appendage, or arm, is fome- 

 times protruded. O. The tenta- 

 cula, at the bale of which the eyes, 

 are placed. 



