PLATE VIII. 
[Unless otherwise stated, all the figures on this plate are copied from Hall, Nat. Hist. New York, Pal. II, 
1852.] 
Spatiopora maculata (Hall). (Page 22.) 
[See also PI. IX, figs. 10, 11. j 
Fig. 1. One of Hall's types of Paleschara maculata, natural size; bryozoan incrusting a 
Platyostoma. 
2. Surface enlarged. 
(Figs. 1 and 2 after Hall, Eleventh Ann. Rept. Indiana Geol. Nat. Hist. 1882.) 
Waldron shale, Waldron, Ind. 
3. Zoarium incrusting a Stephanocrinus, natural size. 
4. Surface of same enlarged. 
(Species figured by Hall, but not named.) 
Rochester shale, Loekport, N. Y. 
Meekopora foliacea (Hall). (Page 25.) 
[See also PI. IX, figs. 5,0.] 
5. Hall's, type of Ceramopora J<>/ia<<<i, natural size. 
b. Surface of same, enlarged, showing arrangement of zooecial apertures and digi- 
tate maculae. 
Rochester shale, Loekport, V Y. 
Fistulipora tuberculosa (Hall). I Page 23.) 
[See also PI. VIII, figs. 111.".; PI. XXIII, fig. 14.] 
7. View of type, natural size, of Rhinopora tuberculosa Hall. This zoarium is a 
crushed utricular specimen. 
8. Enlarged view of same showing arrangement of apertures and tubercules. 
Rochester shale, Loekport, N. Y. 
Fistulipora laminata Hall. (Page 22.) 
[See als<» PI. VII, figs. '4-6. J 
9, 10. Upper (celluliferous) and basal (epithecated) sides, respectively, of the original 
type of Callopora laminata Hall, natural size. 
Rochester shale, Loekport, N. Y. 
Chilotrypa ostiolata (Hall). (Page 24.) 
[See also PI. IX, figs. 1-4.] 
11. Type of Trematopora coalescens Hall, natural size, which proves to be the basal 
portion of Chilotrypa ostiolata. 
12. Surface of same enlarged. 
13, 14, 15. Three typical examples of Chilotrypa ostiolata, X 2. (Original.) 
Rochester shale, Loekport, N. Y 
Fistulipora crustula n. sp. (Page 24.) 
[See also PI. VII, figs. 7 10; Pi XX11I, fig. 15.] 
16, 17. Views of the surface and of the interior of the shell incrusted of Hall's type of 
Ceramopora incrustans. 
Rochester shale, Loekport, N. Y. 
80 
