PLATE 66. 



Plotobia simplex Chamberlin. 



Figure 1. 



1. — Anterior end seen from above and a little to the right (styles of left notocirri, excepting the first 

 one, missing). 



Plotobia coniceps Chambeklin. 



Figures 2-4. 



2. — Anterior end, dorsal view (paratype, Sta. 4661). X 32. 



3. — Anterior end, lateral view, styles of cirri missing (type). X 32. 



4. — Caudal end, dorsal view (paratype). X 32. 



1 



