26 DESCRIPTION OF 



PLATE XXV. 



I'asfe 

 Fig. 1. SCAPHIOCRINUS DECABRACHIATUS. 679 



J. The anal side of specimen ; the right antero-lateral ray somewhat broken and distorted. 



Fig. 2. SCAPHIOCRINUS INTERNODIUS. 679 



'2. T.ie anterior side of a specimen preserving the lower joints of the arm?. 



Fig. 3. SCAPHIOCRINUS SCOPARIUS. 680 



3 a. View of anterior side of specimen, natural size. 



3 b. The same enlarged, showing more distinctly the form and arrangement of the plates. ' 



Fig. 4. ZEACRINUS INTERMEDIUS. 681 



I. The anterior side of the specimen, which has the arms of this ray broken off above the first 

 * bifurcation. 



Fig. 5. CYATHOCRINUS ? PENTALOBUS. 687 



5 a. Basal view of the specimen. 



5 f>. View of the anal side of the same, showing the protuberant form of tin- plates. 



f 



Fig. 6. AGASSIZOCRINUS GJBBOSUS. , W9i y 686 



(i. View of the anal side of the specimen. G b. Basal view of the *ame. 



Fig. 7. DlCHOCRlNUS PROTUBERANS. 689 



7. View of the base, which show* the two basal plates, three of the protuberant radial- 1 , and 

 the narrow anal plate 



Fig. 8. ZEACRINUS MANIPORMIS. 682 



S. View of the antero-lateral and postero-lateral rays of the left side, the latter having the. se- 

 cond radial truncate, and sustaining but a single arm. This feature is probably accidental. 



Fig. 9. ACROCRINUS URN^PORMIS. 690 



9 a. View of specimen, natural size. 9 b. The same enlarged. 



Fig. 10. AGASSIZOCRINUS CONSTRICTUS. 687 



10. The anterior side of the specimen, natural size. 



Fiff. 11. PENTREMITES CERVINUS. 690 



i t 



11 a. Lateral view of a specimen. 11 b. View of the Summit of the same. 



Fig. 12. PENTREMITES CHEROKEEUS. 691 



12 a. Lateral view of a small specimen. 

 12 b. Summit of the same. 



12 c. Basal view of specimen. 



Fig. 13. PENTREMITES GODONJ. 692 



13 a. Lateral view of a specimen. 13 b. Basal view of the same. 



Fio-. 14. PENTREMITES SYMMETRICUS. 694 



14. View of a specimen of medium size. 



^ - 



Fig 15. PENTREMITES OBESUS. 69;> 



15. Lateral view of a specimen, natural size. This species frequently attains a larger si/e. 



Fig. 16. PENTREMITES PYRIFORMIS. 693 



13. A specimen of small or medium size, with a portion of the column attached. 



Yig. 17. PENTREMITES GLOBOSUS. 69") 



17. A soecimen preserving a part of the .column and some fragments of the arms or tentacula 



Fig is AGELACRINUS KASKASKIENSTS. 696 



IS. \ie-n of the specimen, natural size. 



% Since writing the remarks on page 698, a further comparison of specimens has 

 shown that the Pentremites koninckana is quite distinct from P. tennesseea, which like- 

 wise holds a different geological position. 



