I* LATE VII. 



PAGE. 



Enoploura balanoides, Meek. 



Figs. 1, la ami \b. Dors il, ventnil and lateral views, magnified to 2 dia- 

 meters. Prof. Wetherl)y's collection. 

 \c. Dorsal surface of 1«, enlarged to G diameters. 



Id, le and 1/. Di>rs:il, ventral and lateral views of Dr. Newton's spe- 

 cimen. Natural size. 

 Ig. Ventral view of Mr. Patterson's specimen. Natural size. 



LEPERDITIA RADI.\TA, • . . 9 



Fig. 2. View of the two valves. Natural size. 

 2a. View of the interior of a left valve. 

 26. Right valve, enlarged to 3 diameters, showing the radiating strise. 



LEPERDITIA CREPIFORMIS 10 



Fig. 3. View of left valve, enlarged to 14 diameters. 

 3(f. Profile section, to show elevation of ridge. 



LEPERDITIA UNICORNIS. 10 



Fig. 4. View of left valve. Enlarged to 14 diameters. 



4«. Profile view of left valve, showing height of tubercle. 

 46. Profile section. 



LEPERDITIA BIVERTEX, 11 



Fig. 5. Lateral view of left valve. Enlarged to 14 diameters. 

 5a. A cardinal j)rofile in outline. 



Beyrichia persulcata, 12 



Fig. 6. View of left valve. Enlarged to 16 diameters. 



Cyrtolites nitiduiats, 12 



Fig. 7. A side view of a large specimen. Natural size. 

 7a. View of aperture and wliorls of same specimen. 



Microceras minutissimum 13 



Fig. 8. A side view. Enlarged to 10 diameters. 



Cyci.ora depressa, 13 



Fig. 9. View of a large specimen, mignified to 10 diameters. The engrav- 

 ing presents the umbilicus too small. 

 9a. View of the spire. Enlarged to 6}4 diameters. 



Zygospira concentrica, 14 



Fig. 10. Ventral view. Natural size. 



10a. Dorsal view of same specimen. Enlarged to 2 diameters. 

 106 Profile view of same. Enlarged. 



Orthis(?) sectostriata, 15 



Fig. 11. Ventral view of a small specimen. Natural size, 

 llrt. Cardinal view. 

 116. Profile view. 



Lept.ena plicatella, 15 



Fig. 12. Ventral view of an adult specimen. Natural size. 

 12a. Ventral view of same, magnified to 7 diameters. 

 126. Dors:d view of another example magnified to 7 diameters. 

 12c. Profile section of both valves. This figure is erroneous since in 

 all the specimens e.xamined, the convexity is much greater 

 than is here reiiresented. 



Heterocrinus genicitlatus,' 16 



Fig. 13. Anterior view of a large specimen, now in the cabinet of Mr. J. 



Ralston Skinner. 



13a. Posterior lateral view of a portion of a specimen, showing the 



position of the azvgos interradials. From the cabinet of Mr. 



J. G. Hine. 



136. Posterior view of a specimen preserving only a part of the body 



and arms, and showing the ventral prolongation. 

 13c. Portion of an arm enlarged to 2 diameters. 



Dendrocrinus (?) ccrtus, 18 



Fig. 14. Posterior view of the only specimen known. 



Pal.easter finei, , . . . 19 



Fig. 15. Dorsal view of a specimen somewhat distorted by pressure. 

 15a. The madreporiform body enlarged to 6 diameters. 

 156. Ventral view of an arm enlarged to 3 diameters. 



Lepidolites elomgatus, 22 



Fig. IG. View of an entire specimen, 



Lepidolites dickhauti, 21 



Fig. 17. An entire specimen. 



17a. Enlarged view of some of the imbricating plates. 

 176. Enlarged view of a specimen flattened vertically. 



