PLATE XIII, CONTINUED. 



FIG. 47. 



48. 

 49. 

 50. 

 51. 

 52. 

 53. 

 54. 

 55. 

 56. 

 57. 

 58. 



59. 

 GO. 

 61. 

 62. 

 63. 

 64. 

 65. 

 66. 

 67. 

 68. 



69. 

 70. 



71. 

 72. 

 73. 

 74. 



75. 



76. 

 77. 

 78. 



79. 



Two trochitae of the lily encrinite immersed in diluted muriatic acid, with the 

 detached membrane, or rather cartilage. 



Various columnar star-stones, or series of different pentacrinal vertebra'. 



A quadrangular vertebra. 



articulating surfaces of different pentacrinal vertebrae. 



An encrinal doliform tuberous vertebrae, with radiated articulating surfaces. 



A series of vertebrae which are contracted in the middle of their length, and have 

 their articulating surfaces oval, and disposed at right angles with each other on 

 each vertebrae. 



A smaller series, as though belonging to a branch or arm of the animal. 

 A still smaller series, apparently with its terminating tenaculum. 

 The base or organ of attachment, probably of this species. 



A doliform vertebrae, supposed to belong to the succeeding species, from the simi- 

 larity of their articulating surfaces, and of the substances of which they are formed. 



The superior part of a bottle encrinite. 



A similar specimen, to which is united its first vertebra. 



The base or organ of attachment of a small species of encrinite. 



An oblong vertebras, agreeing so closely in its colour and articulating surfaces with 

 the former fossil as to leave but little doubt of their belonging to the same species. 



A clove-formed body, which is concluded to be the superior termination of a small 

 encrinite, from being formed of ossiculas united by suture, somewhat similar to 

 what is seen in the bottle encrinite. From the exact agreement of their surfaces 

 of articulation, its belonging to the same species with the two former fossils may 

 be fairly inferred. 



Fossil bodies, the nature of which is unknown. 



