PLATE 43. 



Fig. 1. 5S7. 1. Dendrocrinu.s longidactylus. (Pag. 193.) 



1 o. An individual, natural size, partially imbedded in shale. 



1 b. Figure showing the structure of the cup, the comnHncement of the proboscis, .ind the arms. 



1 c, d, e. Detached phttcs from the upper part of tlie cup of other individuals. 



1 /". A portion of a branch near the lower jiart. 



1 g. A similar fragment near t)ie extremity of the branches of the fingers. 



1 i. A friiguient of an arm somewhat unequally bifurcating, but having surface aspect and structure like 



this species. 

 1 A. The end of the joint enlarged, showing the articulating rays extending only a short distance from the 



centre. 



1 k. Several joints of the preceding enlarged. 1 I. Column jnint at base of cup. 



Fig. 2. 538. 1. IcHTHYocRiNus L.EVIS. ( Pag. 195.) 



2 a. An individual of medium size, slightly compressed : a portion of the column still remains attached. 

 2 i. A smaller individual, liaving the arms extended upon tlie stone in which it is partially imbedded. 



2 c. A young individual of the same species. 2 c t. The base of the same. 



2d. The crown of another individual, where the arms arc regularly incurved and enfolded, leaving in the 



centre a cavity filled with stone. 

 2 e. A figure showing the structure as far as the third or fourth subdivisions. 

 2/. The base enlarged, showing tlie three undeveloped plates, the five pelvic plates resting on the column, 



and the small space occupied by tlie scapular plate resting on the cohimn. 

 2 g. The same, showing the relative position of the pelvic and secondary plates. 

 2 A, t, k, I. Successive joints from the arms and subdivisions, showing the form of the plate, looking upon 



its lower surface. 

 2 m. Lateral view of a fragment of one of the fingers, showing the union of the plates. 

 2 n. 0. Fragments of columns of this species. 

 2 p. The end of a column enlarged, showing the crenulatious on the outer margin, and the small, circular 



or obscurely pentagonal caual. 



