Note 4 — Front matter
Reading edition
Crustaceans are a class of jointed creatures (articulate animals), possessing a hard shell or crust (Lat. crusta), which they cast periodically. They all breathe by gills.
Reading edition
Crustaceans are a class of jointed creatures (articulate animals), possessing a hard shell or crust (Lat. crusta), which they cast periodically. They all breathe by gills.