PLATE 7 A, 
Fig. 1-5. SPHyEROCYSTITES JIULTIF ASCI ATUS. 
1. The left side of the specimen, natural size. 
2. The summit, showing the origin and distribution of the arms, the upper pairs of pectinated 
rhombs, the ovarian and anal orifices, etc. 
3. The base of the same specimen, showing the lower pectinated rhomb, the ramifications of 
the arms, and the cavity for the insertion of the column. 
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. 
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 bcdy, and the relative position of the plates 
on the two sides. 
Fig. 8, 9, 10. Protaster forbesi. 
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 squamifer. 
11. The body, natural size. 
13. Enlargement of surface, showing the form and arrangement of scales. 
