PLATE 7 A. 



Page 



Fig. 1-5. Sph^rocystites multipasciatcs. 130 



1. The left side of the specimen, natural size. 



2. The summit, showing the origin and distribution of the arms, the upper pairs of ijectinatcd 



rhombs, tlie ovarian and anal orifices, etc. 



3. The base of tlie same specimen, showing tlie lower pectinated rhomb, tlic ramifications of 



the arms, and tlie cavity for tlie insertion of the colum^n. 



4. Diagram illustrating, as far as traced, the distribution of the arms upon the surface of the 



specimen figured. 



4 a. An enlargement of one of the pectinated rhombs. 



Fig. 5, 6, 7. Anomalocystites coRNUTus. 133 



5. The convex side of an individual with a portion of the column attached. 



6. The concave side, showing the two arching basal plates, the large central plate, and the 



superior range of plates. 



7. A plate enlarged, showing the lamellar structure. 



7 a. Diagram illustrating the structure of the btdy, and the relati>e position of the plates 

 on the two sides. 



Fig. 8, 9, 10. Protaster porbesi. 1.34 



8. The fossil, natural size. 



9. Enlargement of the body and arms, with a restoration of the latter in outline beyond the 



limits of the body. 



10. Enlargement of portions of an arm and tentacles, as seen from the lower side. 



Fig. 11 & 13. DiCTYOCRINUS SQUAMIPER. 135 



11. The body, natural size. 

 13. Enlargement of surface, showing the form and arrangement of scales. 



