PLATE VII. 
Fistulipora lockportensis n: sp. (Eage 23.) 
Figs. 1,2. Tangential and vortical sections, respectively, X20, illustrating internal char- 
acters of the species. 
3. Surface view of one of the types, X 8, showing a macula and surrounding zocecia. 
Rochester shale, Lockport, N. Y. 
Fistulipora laminata (Hall). (Page 22.) 
[See also PI. VIII, figs. 9, 10.] 
4, 5. Vertical and tangential sections, X 20. 
6. Surface of Hall's figured type, X 8. 
Rochester shale, Lockport, N. Y. 
Fistulipora crustula n. sp. (Page 24. "i 
[See also PI. VIII, figs. 16, 17; PL XXIII, fig. 15.] 
7. Tangential section, X 20, including a portion of a macula and showing the 
small hut prominent lunaria. 
8. Vertical section, X 20, showing both immature and mature regions. 
9. Surface of a typical specimen showing portion of a macula and the surrounding 
zocecia. 
10. A tangential section, X 20, passing close to the surface where the apertures 
are inclosed by polygonal areas. 
Rochester shale, Lockport, N. Y. 
Fistulipora tuberculosa (Hall). (Page 23.) 
[See also PL VIII, figs. 7, 8; PI. XXIII. fig. 14.] 
11. Tangential section, X20, exhibiting the small, bi-lobed zocecia. 
12. Vertical section, X 20, passing through one of the sides of the utricular zoariumj 
13. Portion of a tangential section, X 20, prepared from Hall's figured type. 
14. Surface of Hall's figured type, X 8. 
15. A vertical section, X 6, to show the growth in hollow stems. The sides of the 
zoarium are brought nearer together than in the specimen in order to save 
space. 
Rochester shale, Lockport, N. Y. 
78 
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