PLATE XL 



Phormosoma uranus Wyt. Thoms. 



Fig. 1. Seen in profile, fully expanded, as it comes up in the trawl. 



Fig. 2. Demuletl abactinal system of specimen about 170 mm. in diameter. 



Fig. 3. Actinal system of same. 



Fig. 4. Portion of test of actinal surface denuded, close to the ambitus. 



Fig. 5. Portion of test of median abactinal surface. 



Figs. 2 and 3 are enlarged twice, all other figures natural size. 



