PLATE XIX. 



PAGB 



SphEnopoteritjm cuneatum, M. and W 262 



Side view of a specimen containing four cells. 

 Profile view of same. 

 Side view of another larger specimen. 

 Enlarged surface markings. 



Dichocrinus constrictus, M. and W 263 



Under side view. 



Anterior view of same, without arms. 



Anal side of same. 



Myalina concentrica, M. and W 281 



View of left valve. 

 Anterior view of same. 

 Enlarged surface markings. 



Straparolltjs similis, M. and W ...285 



View of upper side. 



Profile showing the aperture. 



Straparolltjs similis van. planus, M. and W 286 



Upper side. 



Profile showing the aperture. 



View of umbilicus and under side. 



Platycrinus penicillus, M. and W 266 



Specimen with arms, column and tentacles attached. 



Part of column enlarged, i 



One of the segments of the same. 



ScHCENASTER FIMBRIATA, M. and W .....278 



View of a nearly entire specimen, dorsal side. 



Enlarged view of one of the rays, showing the arrangement of the piec es 

 and pores, as seen when the surface is ground down. 

 1 c. Under side of same, showing the oblique arrangement of the adambu- 

 lacral pieces and the intervening ambulacral furrow, which latter is 

 proportionally much too broad, in consequence of compression. 

 7 d. Under side of an imperfect specimen, natural size, showing the adam- 

 bulacral and oral pieces, without the disc. 



Fig. 8. Dentalium venustum, M. and W 284 



Fig. 



1. 





] a. 





] b. 





\ c. 





1 d. 



Fig 



2. 





2 a. 





2 b. 





2 c. 



Fig. 



3. 





-3 «. 





3 b. 





3 c. 



Fig. 



4. 





4 a. 





4 b. 



Fig. 



5. 





5 a. 





5 b. 





5 e. 



Fig. 



6. 





G a. 





6 6. 





6 c. 



Fig. 



7. 





7 o. 





7 b. 



