Plate IV. 



F(>. 1. Eclimni'< vnhjaris, Sav. About natural size. 



Fif/. 2. Piiapulus caudatas, Lam. The specimen is somewhat contracted, 

 so as to give prominence to the transverse ru<rre. 



Fig. 3. A very large specimen, apparently of Amphiporuti pulchrr. En- 

 larged. 



Fig. 4. Sgnaptn inhca-ens, 0. F. MiiUer. Somewhat enlarged. 



Fig. 5. Cvcumaria hictea, Forbes & Goodsir, attached to a glas.-< vessel. 

 Enlarged. 



