354 ^/'^ American Geologist. June, 1901. 
Carpcntcrohlastus ina^nibasis Rowley. 
Fig. 20. Side view of a specimen to .show the character of ornamenta- 
tion, XI. 
Fig. 21. Basal view of the same, natnral size. 
Figs. 22 and 23. Ventral and side views of a natural cast from chert 
to show the great thickness of the test about the ambulacra 
and the usual unsymmetrical character of the species. Natural 
size. 
Fig. 29. Ventral view of a smaller specimen, preserving the test and 
showing the spiracles and anal opening, natural size. 
Carpcntcrohlastus stclla Rowley. 
Fig. 24. Side view of the type, showing specific characters, natural size. 
Fig. 25. Ventral view to show the anal opening and spiracles, natural 
size. 
Carpcntcrohlastus pcntalohus, n. sp. 
Figs. 26 and 2~. Side and ventral views of the type, natural size. (Spec- 
men somewhat crushed.) 
Sclnzohlastns sayi Shumard. 
Fig. 15. Side view of an undersized specimen, preserving the base of a 
little ventral tube. Natural size. 
Fig. 16. Top of the same specimen, enlarged to four diameters, to show 
the plates in the tube. 
Fig. 28. Ventral view of a somewhat larger specimen, having the cen- 
tral opening closed by a covering of minute plates, passing out 
over the ambulacra for a short distance. Natural size. 
Aorocrinns zvaclismutlii, n. .sp. 
Fig. 38. Side view of the type specimen. Natural size. 
Cactocrinus springer! Rowley. 
Fig. 30. Side view of a fine bod\-, natural size. 
tig. 31. A specimen showing the heavy spinose ventral tube and the 
heavy nodose arms, xi. 
Figs. 49 and 50. The column of this crinoid. end and side views, nat- 
ural size. * 
Lcptopora ramosa, n. so. 
Fig. 36. Side view of the type specimen, natural size. 
Lcptopora proccra, n. sp. 
Fig. 37. Side view of the type specimen, natural size. 
Axophyllntn ? allcni, n. sp. 
Fig. 32. Side view of the largest specimen, natural size. 
Fig. 2)2>- Same w'ith the calix turned a little toward the observer. 
Fig. 34. Same, calix view. 
Fig. 35. Side view of a smaller specimen. All figures of this species, 
natural size. 
Aviplcxus radigcrus. n. so. 
Fig. 39. Side view of the type specimen, natural size. 
