PLATE III 
MACROCHEILUS? (CALLONEMA?) PRIMiEVUS. 
Page 34. 
Fig. 1. Lateral view of an imperfect cast. 
Figs. 2, 3. Two views of a larger individual, which is obliquely crushed. 
Macrocheilus Hebe. 
Page 32. 
Two views of a large individual (natural size). From the Hamilton group, Pavilion, Genesee 
county, N. Y. 
The opposite sides of the typical specimen enlarged to three diameters. From the Goniatite 
. limestone of the Marcellus shale, near Manlius, N. Y. 
Macrocheilus Hamiltoni^e. 
Page 33. 
Figs. 8, 9. Views of the opposite sides of the typical specimen. 
Figs. 10, 11. The opposite sides of an internal cast. From the Hamilton group, Cumberland, Md. 
Figs. 12-14. A specimen which has been denuded of the spire and flattened vertically so as to change entirely 
the character of the shell. 
Macrocheilus (Holopea) macrostomus. 
Page 33. 
Figs. 15, 16. The opposite sides of the typical specimen, showing the form of the shell and surfa'ce charac¬ 
ters. Hamilton group at Pratts Falls, Onondaga county, N. Y. 
Fig. 17. An internal cast, referred to this species. From the same locality. 
Fig. 18. A compressed specimen, referred to this species; the spire is more elevated than usual, but the 
other characters are similar. Hamilton group, Madison county, N. Y. 
CALLONEMA Lichas. 
Page 52. 
Fig. 19. A specimen in which the surface is partially preserved. 
Figs. 20, 21. Views of the opposite sides of a larger specimen preserving the substance of the shell on some 
parts. From the Upper Helderberg limestone .near Clarence Hollow, N. Y. 
Fig. 22. An internal cast from near Coluinbus, Ohio. 
Cyclonema Doris. 
Page 34. 
Fig. 23. A specimen of this species preserving the usual form. From the Schoharie grit, Schoharie, N. Y. 
Pleurotomaria? sp. ? 
Fig. 24. A specimen almost entirely denuded of the shell, but retaining impressions of the revolving band 
on the body-volution. From the Upper Helderberg limestone, Clarence Hollow, N. Y. This 
form may be a cast of Pleurotomaria Itys. 
Pleurotomaria capillaria? 
Page 77. ; 
Fig. 25. Enlargement of a specimen which is referred with doubt to this species. From the Upper Helder¬ 
berg limestone, 'Williamsville, N. Y. 
Figs. 4, 5. 
Figs. 6, 7. 
