PLATE LXXI—Continued. 
Fig- 
Fig. 
Fig. 
Fig. 
Fig. 
Fig. 
Fig. 
Figs. 
Fig. 
Fig. 
Fig. 
Fig. 
Fig. 
Lunulicarmum curtum. 
Page 437. 
18. A left valve of this species. 
Hamilton group. Near Tally, N. Y. 
19. An enlargement of the preceding to show more clearly its characteristic features. 
20. A right valve of somewhat different form. 
21. An enlargement of the same. 
Hamilton group. Shore of Cayuga lake, N . Y. 
22. A right valve of a somewhat broader form. 
Marcellus shale. Alden, Erie Co., N. Y. 
23. An enlargement of the surface from the lower margin of the specimen fig. 18, showing its 
pustulose character. 
Lunulicarmum orbiculare. 
24. A left valve. 
Marcellus shale. 
Page 436. 
Bloomfield, N. Y. 
Lunulicarmum ornatum. 
Page 437. 
25-27. Three valves showing the characteristic form of this species. The beak of fig. 26 is repre¬ 
sented as too obtuse. 
Chemung group. Elmira, N. Y. 
28. A left valve. The radii are more flattened than represented in the figure. 
Portage group. Cashaqua creek, N. Y. 
29. An enlargement of the surface from the preceding. 
30. A left valve, laterally compressed, producing an elongate form. The specimen is the original of 
Pinnopsis acutirostra. 
Portage group. Cashaqua creek, N. Y. 
31. A right valve similar to the preceding. 
Chemung group. Near Elmira, N. Y. 
32. An enlargement from the surface of the specimen fig. 30. The summits of the rays are repre¬ 
sented as too concave. 
