184 



genera'of carnivorous proboscis-armed sea mollusks in which the colu- 

 mella is plaited. 



Externally the "shell of Auricula is usually dark chestnut-brown, occa- 

 sionally banded, and often wrinkled ; internally the teeth and plaits, which 

 are essentially conspicuous, are sometimes, brightly coloured. 



The Auricula abound chiefly in the swampy islands of the Eastern seas. 

 Only two small species have been found in England. 



The best-established subgenera of the group are Melampus, Pedipes, 

 and Carychium. 



1. acuta, B'Orbigny. 



2. alba, Gray. 



3. angulifera, Petit. 



4. angistonia, Beshayes. 



5. auricella, Ferussac. 



6. australis, Quoy. 



7. avena, Guillou. 



8. bidentata, Montagu. 



9. biplicata, Beshayes. 



10. borealis, Conrad. 



11. coniforrais, Lamarck. 



12. cornea, Beshayes. 



13. costata, Quoy. 



14. denticulata, Montagu. 



15. fasciata, Beshayes. 



Species. 



16. felis, Lamarck. 



17. Firmini, Payraudeau. 



18. fruraentum, Guillou. 



19. fuscagula, Lea. 



20. globulus, B'Orbigny. 



21. Judge, Lamarck. 



22. labrella, Beshayes. 



23. lineata, Brapamaud. 



24. livida, Beshayes. 



25. lutea, Quoy. 



26. Malchi, Miiller. 



27. marginata, Deshayes. 



28. Micheli, Mitt re. 



29. Midse, Lamarck. 



30. minima, Brapamaud. 



31. monile, Lamarck. 



32. mustelina, Beshayes. 



33. myosotis, Brapamaud. 



34. myotis, Nuttall. 



35. nitens, Lamarck. 



36. nucleus, Ferussac. 



37. pallida, (?ray. 



38. Pepita, P/e#^. 



39. personata, Michaud. 



40. reflexilabris, B'Orb. 



41. rugata, Menke. 



42. Sileni, Lamarck. 



43. stagnalis, B'Orbigny. 



44. subula, Qwoy. 



45. uniplicata, Mittre. 



Figure. 



Auricula Mid,e. PI. 19. Fig. 103. Shell, with its solid growth and 

 chestnut-brown epidermis, showing the strongly plaited columella and 

 rounded base. 



Shell 



Family 15. CYCLOSTOMACEA. 



depressed, globose, turreted, smooth, with the lip mostly re- 



flected, sometimes notched or figured at the margin ; operculum 

 horny or calcareous. 



