PLATE 5. 



Pugo 

 Fig. 1 - 4. PlATYCRIXUS TENTACULATUS. 116 



1. The imliviihial rcprespiitcd of the natural size. 



2. Enlargement of arms and tentacles from the second radial plate; the l«o contignous arms 



of the two i)aira being continued with the tentacles as far as seen in the specimen. 



3. Enlargement of the ))!ates from the basal tln-ongh tlie radial and brachial ))latos, and con- 



tinuation of a single arm. 



4. Diagram showing the structure. 



Fig. 5, 6, 7. Brachiocrinus nodosarius. IIH 



5. A specimen with the tentacles more closely arranged than usual, and terminating below in 



a round condyle-like extremity. 



6. A s|wcimen preservmg eight of the tentacles upon one side of tlie arm, and four njxm the 



other. 



7. An arm coiled, sliowing the i>oints of attacliment, with numerous detached fragments of 



tentacnia. 



Fig. 8 - 12. Edriocrintjs pocilliformis. 121 



8 Basal view of a large individual, tlie proportional length being greater tlian usual. 

 9. Lateral view of the same. 



10. Lateral view of a larger specimen. 



11. Interior of the same. 



12. Enlargement of the concavity of fig. 10, showing the depressions corresponding to tl.o 



depressions in the margin and the concentrically striated surface. At each angle tliere is 

 a slight depression or pore, which seems to communicate with tlie cavity between the 

 basal and inner plate. 



Fig. 13 & 14. ASPIDOCRINUS CALLOSUS. 123 



13 & 14. Interior and e.\terior views of the specimen described. 



Fig. 15 - 18. ASPIDOCRINUS SCUTELLIFORMIS. 122 



15. Tlie exterior of the base of an individual of this species. 



16. The interior of the same. 



17. Profile or lateral view of the same. 



18. The interior of a large specimen. 



Fig. 19 & 20. ASPIDOCRINUS digitatus. 123 



19 & 20. Upper side and profile view of the sjiecimen. 



