PLATE 46. 



Fig. 1, 2. 69-5. ]. Saccocrinus speciosus. ( Pag. 205.) 



1 a. A specimen preserving the greater part of the body, with several arms attached, which are nearly entire. 

 1 b, c. The bifurcation of two of the arms, showing a slight difference in the arrangement of the plates at 



these points. 

 1 d, e. Fragment and section of the coliunn. 

 1 /, g-. Enlargements of the same, showing the slightly nodulose margins of the alternating joints, the crenu- 



lations towards the margin of the section, and the round canal. 

 1 h. Another fragment of a column, showing the nodulose joints more distant from each other. 

 1 i. Section of the same. 

 1 k, I. Enlargements of the two preceding figures. Fig. 1 h shows the canal to be much larger than in 1 e, 



and the striated surfaces extending to it ; while in e, g, there is shown a smooth space between the 



margin of the canal and the commencement of the stria?. 



1 m, n. A fragment from the same column, farther from the summit, where the joints are equal and smooth. 

 2. The body of another specimen, probably of the same species. 



Fig. 2. 592. 3. Lecanocri.nus simplex. ( Pag. 202.) 



'2 a, b. The specimen, natural size and enlarged. 



2 c. The crown, showing the ten subdivisions of the arms closely enfolded. 

 2 d. An enlargement showing the ornamental surface of the plates. 



2 e. The structure of the cup, carried to the third plate beyond the divisions of the arms. 



Fig. 3. 593. 4. Lecanocrinus caliculus. ( Pag. 203.) 



3 a. The fragment described, showing intercostal and interscapular plates. 



3 b. Shows the structure of the specimen and arrangement of plates. 



Fig. 4. 594. 1. Macrostylockinus ornatus. { Pag. 204.) 



4 a. The specimen described, showing the body and four of the arms, all broken off before reaching their 



termination. 

 4 b. The structure as ascertained from tlie specimen 4 a. 



4 c. d. Two costal plates enlarged, showing their striate and tubcrculo-striafe character. 

 4 c. A pelvic plate enlarged, showing a striate surface only. 



4 /. A plate from near the base of the arms, showing the tuberculo-crenate upper edge. 

 4 g. Several joints from the upper part of the arms enlarged, showing the strong tubercle on the back of 



each plate, with smaller ones on each side. 



