X 



CONTENTS. 



Page 



PART II. — CIRRHIPED A - - - 36 



Family I. — Cirrhipeda sedentaria - -37 



12. Tubicinella - - - - 37 



13. Coronula - - - - 37 



14. Balanus - - - - 38 



15. Acasta - - - - 39 



16. Creusa - - - - 39 



17. Pyrgona - - - - 39 



Family II. — Cirrhipeda pedunculated - 40 



18. Lithotrya - - - - 40 



19. Anatifa - - - - 41 



20. Scalpellum - - - - 43 



21. Pollicipes - - - - 43 



22. Cineras - - - - 43 



23. Otion - - - - 44 



PART III.— CONCHIFERA or BIVALVES - 45 



Order I. — Brachiopoda - - - 47 



Family I. — Tendinosa - - - 48 



1. Lingula - - - - 48 



2. Terebrattila - - - - 49 



Family II. — Adhcerentia * - - 50 



3. Thecidium - - - - 50 



4. Crania - - - - 51 



5. Orbicula - - - - 52 



Order II. — Dimyaria - - - - 53 



Division I. — Conchifera crassipeda - - 54 



Family I. — Tubicolidce - - - 54 



6. Aspergillum - - - - 54 



