EXPLANATION OF PLATE XXVIII. 
Glaucoma in eye of Holocentrum rubrum, natural size. 
Rocinella latis, n. sp., male, ventral view, X 64. 
ic _ dorsal view, X 64. 
_ se first gnathopod, X 30. 
+ - second peraeopod, X 30. 
Argulus foliaceus, Linn., female, ventral view, X 30. 
ae a dorsal view, X 30. 
a Se male, dorsal view, X 30. 
