PLATE XXXV 



PAGE 



Figs. 1-4. SPH^BOCYSTITES MUI/TIFASCIATUS Hall 245 



1. The two circles of plates composing the anal pyramid; the numbers 



indicate the bounding thecal plates. About X 5. 



2. Part of an ambulacrum, showing one row of ambulacral plates, the 



ambulacralia, and remnants of brachioles. About X 10. 



3. An incomplete brachiole. About X 10. 



4. Deltoid 23, with the madreporite and hydropore closed by its 



pyramid. About X 10. 



Figs. 5, 6. SPH^EROCYSTTTES GLOBUT..ARIS Schuchert 247 



5. The anal pyramid and the bounding thecal plates indicated by 



numbers. About X 5. 



6. 'Part of an ambulacrum, showing the ambulacral and ambulacralia 

 plates, and the points of attachment for the brachioles. About 

 X 5. 



Fig. 7. PSEUDOCRINITES STELLATUS Schuchert 239 



Part of an ambulacrum, showing one row of ambulacral plates, the 

 brachiole facets, and the ambulacralia with their intermediate 

 large plates. About X 5. 



Figs. 8-10. PSEUDOCRINITES PERDEWI Schuchert 242 



8. Deltoid 23, with the madreporite and the small hydropore; the 



double row of small plates and the ambulacralia. About X 5. 



9. Portion of an ambulacrum in a young specimen. About X 5. 



10. Same as fig. 9; seen from the side to show the high elevation of 

 ambulacralia. About X 5. 



Figs. 11-13. PSEUDOCRINITES GORDONI Schuchert 236 



11. Portion of an ambulacrum. About X 5. 



12. A nearly complete brachiole. About X 5. 



13. Deltoid 23 crowded into the ambulacral plates, showing the madre- 



porite and hydropore. About X 5. 



Fig. 14. PSEUDOCRINITES CLARKI Schuchert 240 



Plate 13 on the left and the incomplete circle of 7 small plates bounding 

 the anal pyramid of 7 pieces. About X 5. 



Figs. 15-16. LEPOCRINITES MANLIUS Schuchert 231 



15. An ambulacrum near the oral opening. About X 5. 



16. The two circles of pieces composing the anal pyramid. About X 5. 



M 



