4.04: SPH EROMID. 
chial organs; the last or sixth pair are crustaceous, and 
terminated by two nearly equal oval plates, of which 
the outer is movable, and folds under the inner, which is 
soldered to the basal support. 
They are vegetable feeders, and some species have 
recently been described by Dr. Fritz Muller, from the 
Brazils and Madras, which were found living as extensive 
perforators in submarine timber. 
































































































































STUDLAND BAY. 
