PLATE XXXII 



PAGE 



Figs. 1-3. ANOMALOCYSTITES ? DISPARILIS Hall 228 



1. Anteal or concave side, showing the deeply arched or crescentic 



form of base with the succeeding plates. 



2. Posteal or convex side, showing the form and arrangement of plates. 



3. Lateral view of the same specimen. 



Oriskany formation, Ridgely member, Cumberland. 



Figs. 4-7. LEPOCRINITES GEBHARM Conrad 229 



4. The anterior side, showing the pectinated rhombs at the base. 



5. The posterior side, showing the ovarian aperture with the sur- 



rounding plates removed. 



6. The left side of the same specimen. The prominence of the ovarian 



side over the opposite is well seen. 



7. Base of column, showing slight evidences of rings. 



Coeymans formation, New York. 



Figs. 8, 9. LEPOCRINITES MANLIUS Schuchert 231 



Two views of type. X 2. Helderberg formation, Keyser member, 

 Keyser, W. Va. 



Figs. 10, 11. TETRACYSTIS CHRYSALIS Schuchert 232 



10. View showing upper left-hand pectinirhomb. X 2. 



11. Same specimen from the antanal side. X 2. 



Helderberg formation, Keyser member, Keyser, W. Va. 



Figs. 12-16. J^KELOCYSTIS HARTLEYI Schuchert 233 



12. View of type; a large specimen. Anal opening to the right. X 2. 



13. A smaller specimen with the anal opening to the left. X 2. 



14. Camera-lucida drawing of the oral end to show the arrangement 



of the ambulacral plates, the ambulacralia (somewhat re- 

 stored), brachiole attachments, and the plate with the madre- 

 porite; the latter lies in the depression of the large plate on the 

 left of the figure. X 2. 



15. The anal pyramid; the positions of the bounding plates, 7, 8, 13, 



14, are indicated. X 8. 



16. Plates 14 and 15, with the discrete-pectinirhombs; the dichopores 



on plate 14 are deeply situated and do not show on the surface. 

 X 8. 

 Helderberg formation, Keyser member, Keyser, W. Va. 



