114 



2 Pataeaster (Uraster) obtusa Forb. Mem. h'eol. Surv. 1849. 



Decade 1, pl. I, fig. 3. Caradoc, Drumcannon Wa- 

 terford Bala Rocks, Moel-y-Garnedd. 



3. „ coronelfa Salt., 1S57. Ann. and Mag. Nat. Uist. op. 



cit. p. 326. May Hill Sandstone. Malvern. 



4. „ (Uraster) Ruthveni Forb., 1849 op. cit. Decade 1, 



pl. I, fig 1 Lndlovv Kocks, Kendal, Westmorelaiid. 



5. „ hirudo Forb., 1849, loc. cit. pl. I, fig, 4. Ludlow 



Rocks, Kendal, Westmorcland. 



6. „ Niagarensis Hall, Palaeontology of New York. Tren- 



ton Limestone. New-York. 



7. „ C Aslerias) matutina Hall, Palaeontology, New-York. 



Vol. I, p. 91, pl. XXIX, fig. 5. Twentieth Report 

 of State Cabinet, ls66, p. 3, pl. IX, fig. 2 (syn. Pe- 

 traster rigidus). Trenton Limestone. Trenton Falls. 



8. „ Shaefferi Hall; 20th Report, 1866, p. 4, pl. IX, üg.1. 



Shales of Hudson River Group, Cincinnati, Ohio. 



9. „ granulosa Hall; 20th Report, 1866. p. 5. Same for- 



mation as last species. 



10. „ ( Petraster) Wilberanus Meek & Worthen, Proceeds. 



Acad. Nat. Soc, Philadelphia, 1861, p. 142; Hall, 

 20th Report, 1866, p. 5. Lr. Silurian, Oswego, 

 Kendal Co. Illinois. 



11. „ (Asterias) antignata Locke, Proceeds. Acad. Nat. 



Soc, Philadelphia, 1846, vol. III, p. 32. Hudson's 

 River Group, Cincinnati. 



12. „ Jamesii Dana sp. U.P.James, Acad. Nat. Soc, 1841. 



American Journ. Soc, voL -I, p. 441. Dana. Ame- 

 rican Joarn. Soc (n. s.), vol. 35, p. 295. Hudson's 

 River Group, Cincinnati. 



13. „ antiqua Troost sp. 1835. Hall, 20th Report on 



State Cabinet, 1866, p. Ü Hudson's River Group, 

 Harpeth River, Davidson County, Tennessee. 



14. „ eucharis Hall, 20th Report, 1866, p. 7, pl. IX, fig. 3. 



Hamilton Group, Hamilton, Aladison Co., etc. 



15. „ constellata Thorent, Lower Green Schists, Lower Si- 



lurian, Mondrepuis, Aisne, France. 



16. „ imbricata Salt., n. sp. Caradoc, Llanfyllin, Mont- 



gomeryshire, Wales. 



17. „ parviuscula Billings, Clinton Group, Arisaig, Nova 



Scotia. 



18. „ pygmaea Eicaw. Lower Silurian, Pulkowa, Russia. 

 VI. 1. Palasterina antiqua Hisinger, Lethaea Suecia, p. 89, t. 26, fig. 6. 



Ludlow Rocks, Mount Hoburg, Sueden; and Hudson 

 River Group, Cincinnati, Ohio. 

 2. „ (Uraster) primaeva Forb., 1849, op. cit. pl. 1, fig. 2. 



