upper Ordovician at J\^z'ay, hid. — Cuiuings. 
363 
5. Cocloclcma altcrnatum (James) (a). 
6. Bythopora arctipora (Nicholson) (c). 
7. Lcptotrypa cf. Calccola (Miller & Dyer) (rr), a fragment 
from which the shape of the zoarium could not be made 
out. The internal diaracters are those of the species 
calccola. 
8. Dckayclla ulriclii (Nicholson) (c). Large form. 
9 Dalmanclla midtisccta (Meek) (c). 
ID. Plcctainboiiitcs scricciis (Sowerby). 
11. Zygospira modcsta (Hall). 
12. Calynicnc calliccphala (Green). 
13. Proctus sp. 
14. Conclnolites sp. 
15. Crinoid segments of several species, (c) This layer is 
probably the equivalent of the base of XI b of Ulrich's 
Cincinnati section. 
No. 12. Shale with occasional thin lavers of limestone, 6 feet 4 inches. 
No. 13. Compact limestone, 5 inches. 
1. Cocloclcma alternatum (James) (c). 
2. Bythopora arctipora (Nicholson) (c). 
3. Callopora onealli-sigillaroides (Nicholson) 
4. Dckayclla ulricln (Nicholson). 
5. Arthropora sp. 
6. Lcptotrypa sp. 
7. Callopora onealli-cominiinis (James). 
8. Rafinesquina altcrnata (Con.). 
9. Dalmanclla multisccta (Meek). 
10. Calynicnc small fragment. 
11. Zygospira modcsta Hall. 
12. Batostoma implicatiim (Nicholson). 
13. Crinoid segments. Heterocrinus? 
No. 14. Shale, 5 inches. 
No. 15. Compact limestone, 6 inches. 
1. Eridotrypa vcvaycnsis n. sp. 
2. Dckayclla obscura Ulrich. 
3. Callopora oucalli var. 
4. Bythopora sp. 
5. Escharopora acuminata (James) ? 
6. Dckayclla ulriclii (Nicholson). 
7. RaHncsquina altcrnata (Conrad). 
8. Dalmanclla multisccta (Meek). 
No. 16. Shale, 2 feet 5 inches. 
No. 17. Limestone, 3 inches. 
Callopora onealli-sigillaroides (Nicholson). 
Batostoma implicatum (Nicholson). 
Peronopora vera. 
Bythopora arctipora (Nicholson). 
Dalmanclla multisccta (Meek). 
