Part 80

26. ---- Montagui. Acasta, Leach.

27. ---- galeatus, Conoplæa, Say.

28. Creusia gregaria. b. showing the internal structure.

29. Nobia grandis.

30. Savignium crenatum. } } 31. Pyrgoma cancellata. } Pyrgoma, Auct. } 32. Adna Anglicum. } } 33. Megatrema semicostata.}

Order, PEDUNCULATED CIRRIPEDES.

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

35. Scalpellum vulgare.

36. Smilium Peronii.

37. Pollicipes polymeus. Ramphidoma, Schum.

37*. Pollicipes mitellus. Capitulum, Klein.

38. Brismæus Rhophodius.

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

40. Ibla Cuvieriana.

41. Heptalasmis Warwickii. Octolasmis, Gray.

42. Cineras vittatus.

43. Otion Cuvieri.

Class, CONCHIFERA. Order, C. DIMYARIA. Fam. Tubicolaria.

44. Aspergillum vaginiferum. Penicillus, Brug.

45. Clavagella, a fossil species.

46. Teredina personata.

47. Lignite, pierced by Teredinæ.

48. Teredo navalis; a, tube (from Sowerby's Genera.)

49. Wood bored by Teredo.

50. Xylophaga dorsalis. Xylotrya, Leach.

51. The same, in wood. (This would be more properly placed in Pholadaria.)

52. Gastrochæna Modiolina, in the tube (from Sowerby's Genera.)

53. Fistulana Clava. } } (From Sowerby's Genera.) 54. Tube of the same. }