I'LATE 16. 



Fig. 1, 2. 695. 1. Saccocrinus speciosls. ( Pag. 205.) 



1 fl. A specimen preserving the greater part of tlie body, with several arms attached, which arc nearly entire. 

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



these points. 

 1 d, c. Fragiiicrit and section of the column. 

 1 /, g. Enlargements of the siime, 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 fc, I. Enlargements of the two preceding figures. Kig. 1 h shows the canal to he much larger than in 1 e, 



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



margin of the canal and the commencement of the striie. 



1 m, n. A fragment from the .same column, flirtlier 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. Lecanoorinus 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 surfai-e of the plati^s. 



2 e. The structure of the cup, carried to the third plate beyond the divi.sions 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. Macrostylocrinus ornatus. ( Pag. 204.) 



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



termination. 

 4 6. The structure as ascertained from the specimen 4 a. 



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

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



4y. 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. 



