Plate IV 

 Pig. 1. Echiurus vulgaris, Sav. About natural size. 



i-Vy. 2. Priapukts caudattu, Lam. The specimen is somewhat contracted, 

 bo as to give prominence to the transverse rugae. 



/•'/</. 8. A very large specimen, apparentlj of Amphiporus puleher. En- 

 larged. 



/•V-/. 4. Synapta inherent, 0. F. Mttller. Somewhat enlarged. 



Fty. 5. Cueumaria lactea, Forbes & Goodsir, attached to a glass vessel. 

 Enlarged. 



