Plate ]2. 



Fig. 1. Asfropccftii pcdicrlldris ; jHirliou of ahiirtiiial suii'iice, ciiliir.m'd. p. ST. 



2. Astroijcrtcn Ikzoiiicus; portion of actinal surface, enlarged, p. 82. 



3. Dipsncastcr diaplioruH ; aliactinal aspect of ray, enlarged, p. 152. 



4. Cteitnithdidsh r diphn-li n'ni>i ; ai'tiual view of ray, enlarged, p. 95. 



• 559 



