286 



Shell Life 



all other appendages, which are bright orange or deep 

 yellow. It haunts the neighbourhood of rocks, where 

 it is not molested by fish, who decline to feed upon it. 

 Whether it is that tlie appendages produce a false 

 impression of its nature, or whether it is dangerous 

 food and the yellow is a warning colour, is not 

 altogether clear; but it is certain that for one or 



Crested Slug (enlarged four diameters) 



both of these reasons the Ancida is a protected 

 species. 



Homberg's Triton {Tritonia hombergi) begins that 

 section of the Sea-slugs that are ornamented by a 

 profusion of waving plumes due to their habit of 

 wearing their gills, or gills and liver combined, 

 outside. Homberg's Triton is a giant, for it runs to 

 6 and occasionally 8 inches in length, though ex- 

 amples of 4 inches are more plentiful. Even these 

 we shall only obtain by the dredge or from fishermen's 

 lines. It varies in colour from white to purple-brown ; 

 its back covered with soft tubercles, and along each 



