242 BERMUDA. 



The fifth class of MoUusca embrace the Brachio- 

 podes. There are no genera, to our knowledge, which 

 represent this family. 



The sixth class of the Mollusca comprise the 

 Cirrhopodes. These animals are soft and destitute 

 of head or eyes ; they are testaceous, having the body 

 fixed, and provided with a mantle ; they have also 

 tentacula, with curled tufts. The arms vary in 

 number and are unequal in size ; the shell is either 

 sessile, or elevated on a flexible pedicle, and it 

 is composed of several valves, which are sometimes 

 moveable, sometimes fixed. 



There are two genera to this family, viz. : — 

 1. Genus Anatifa. — This genus, as well as the fol- 

 lowing one, is found attached to ships, logs of wood, 

 bottles, corks of nets, fuci, floating testaceous mol- 

 lusca (the Iantha,ifor instance), and even to whales, 

 turtles, and serpents. The most numerous species 

 in our seas {Lepai anatifera, Linn.) derives its name 

 from the opinion once seriously entertained, that it 

 was the young of a kind of goose. 



2. Genus Salanus (or Acorn Shells). — The shell 

 of the Balani is immovable in all its external parts. 

 It is of a conical shape, sometimes elongated; and 

 is found adhering to rocks, stones, and marine 

 bodies. 



