EXPLANATION OF PLATES. 293 



Class, CIRRIPEDES. 

 Order, Sessile Cirripedes, 



FIG. 



14. Tubicinella Balsenarum. 



15. Coronula Testudinaria. Chelonobia, Leach, Astrolepas, Klein. 



16. ■ Balsenaris. Cetopirus, Ranz. 



17. diadema. Diadema, Ranz. 



18. Chthalamus, Ranz. (from Blainville.) 



19. Platylepas pulchra, Leach. One valve separate, showing the 



inside. 



20. Clitia Verruca, Leach. Octhosia, Ranz. Verruca, Schum. 



21. Conia porosa. Teraclita, Schum. 



22. Elminius Leachii. 



23. Catophragmus imbricatus, (from Sowerby's Genera.) 



24. Octomeris angulosus, (from Sow. Gen.) 



25. Balanus tintinnabulum. 



26. Montagui. Acasta, Leach. 



27. galeatus, Conoplsea, Say. 



28. Creusia gregaria. b. showing the internal structure 



29. Nobia grandis. 



30. Savignium crenatum. ^ 



31. Pyrgoma cancellata. f 



.,„ . n . i- > Pyrgoma, Auct. 



32. Adna Anghcum. 4 



33. Megatrema semicostata. ' 



Order, Pedunculated Cirripedes. 



34. Pentelasmis lsevis. Antifa, Lam. a. anterior 



35. Scalpellum vulgare. 



36. Smilium Peronii. 



37. Pollicipespolymeus. Ramphidoma, Schum. 

 37*.Pollicipes mitellus. Capitulum, Klein. 



38. Brismasus Rhophodius. 



39. Lithotrya dorsalis. Absia, Leach, Litholepas, Bl. 



40. Ibla Cuvieriana. 



41. Heptalasmis Warwickii. Octolasmis, Gray. 



42. Cineras vittatus. 



43. Otion Cuvieri. 



