PLATES. 



Fig. til. Coronula lestudinaria. 



4 12. A Coronula with its oper- 

 culum. 



413. Pyrgoma cancellata • 



414. * Creusia verruca. 



415. Tubicinella Lamar ckii. 



a. the end of the tube, shew- 

 ing the operculum. 



Fig. 116. Acastaglans. 



a. the lower valve separated. 



117. Otion Cuvieri. 



118. Anatifera s triata . 



119. Pollicipes mitrata. 



120. * Cineras vittata. (Lepas 

 Coriacea.) 



a. b. c* three of the valves, 



TUBICOLiE. 



Fig. 421. Teredo navalis. 



a. the two valves which assist 

 the animal in piercing the 

 wood. 



4 22 . Sep (aria polythalamia . 



the smaller end of ditto, 

 shewing the passage for the 

 two tubes of the animal. 



423. Spirorbis carinata. 

 a. natural size. 



424. Teredina personata. 

 125. Fistulana gregata. 



, 126. Aspergillum Javanum. 



a- the larger end of the shell, 

 shewing the perforations. 



Fig. 127. Sabella rupijica. 

 128. Magilus antiquus. 

 429. Vermilia rostrata. 



130. Serpula arenaria. 



131. * Clavagella echinata, 



132. Siliquaria Icevigata. 



133. Galeolaria ccespitosa. 



134. Dentalium fas datum, 



135. * Pectinaria cap ens is. 



436. Amphitrite penicillus. 



437. * Nereis fimbriata. 



438. * Terebella conchilega, 



