300 SYNOPSIS OF AMERICAN FOSSIL BRACIIIOPODA. [bull. 87. 



PARASTROPHIA Jliill aud C. Genotype Atrypa heniii)licata Hall. 



Parastropbia Hall aud Clarke, Pal. New York, VIII, Pt. II, 1893, p. 221;— Thir- 

 teenth Ann. Kep. N. Y. State Geologist, 1895, p. 839. 



Parastrophia divergens Hall and Clarke. Lorraine (Ord.). 



Parastrophia divergeus Hall and Clarke, Pal. New York. VIII, Pt. II, 1895, pp. 222, 



366, pi. 63, figs. 4-7. 

 Loc. Wilmiugtoii, Illinois. 



Parastrophia greenei Hall and Clarke. Niagara (Sil.). 



Parastrophia greenii Hall and Clarke, Pal. New York, VIII, Pt. II, 1895, pp. 222, 



367, pi. 63, ligs. 17-20, 22. 

 Loe. Milwaukee, Wisconsin. 



Parastrophia hemiplicata Hall. Trenton (Ord.). 



Atrypa hemiplicata Hall, Pal. New Y'ork, I, 1847, p. 144, \A. 33, fig. 10.— Billings, 



Canadian Nat. Geol., I, 1856, p. 208, figs. 20-23. 

 Atrypa circulus Hall, Pal. New York, I, 1847, p. 142, pi. 33, fig. 7;— Twelfth Rep. 



N. Y. State Cab. Nat. Hist., 1859, p. 65. 

 Pentauierus heniiplicatus Hall, Twelfth Rep. N. Y'. State Cab. Nat. Hist., 1859, 



p. 66. — Billings, Canadian Jour., IV, 1859, p. 316. 

 Camarella hemiplicata Billings, Geol. Canada, 1863, p. 168, fig. 154. 

 Camarella circulus Miller, American Pal. Fossils, 1877, p. 107. 

 Camarella bernensis Sardeson, Bull. Minnesota Acad. Nat. Sol., Ill, 1892, p. 328, 



pi. 4, figs. 4-6. 

 Anastrophia f hemiplicata Wincbell and Schuchert, Minnesota Geol. Survey, III, 



1893, p. 382, pi. 30, figs. 29-31.— Whiteaves, Pal. Foss., Ill, Pt. Ill, 1897, p. 



167. 

 Parastrophia hemipKcata Hall aud Clarke, Pal. New York, VIII, Pt. II, 1893, p. 



221, pi. 63, figs. 1-3. 



Loc. Middleville, Watertown, etc.. New York; Center County, Pennsylvania; 

 Wisconsin; Minnesota; Ottawa and Lake Winnipeg, Canada. 



Parastrophia hemiplicata rotunda (Wincbell and Schu.). Trenton (Ord.). 

 Anastrophia f hemiplicata var. rotunda W. and S., Minnesota Geol. Survey, III, 



1893, p. 383, pi. 30, figs. 32-35. 

 Loc. Cannon Falls, Minnesota; Decorah, Iowa. 



Parastrophia latiplicata Hall and Clarke. Niagara (Sil.). 



Parastrophia latiplicata Hall and Clarke, Pal. New Y'ork, VIII, Pt. II, 1895, pp. 



222, 368, pi. 63, figs. 23-27. 

 Loc. Milwaukee, Wisconsin. 



Parastrophia multiplicata Hall and Clarke. Niagara (Sil.). 



Parastrophia multiplicata Hall and Clarke, Pal. New Y'ork, VIII, Pt. II, 1895, 



pp. 222, 367, pi. 63, figs. 15, 16, 21. 

 Loc. Milwaukee, Wisconsin. 



Parastrophia (?) obscura (Hall and Whitfield). Pogonip (Ord.). 



Porauibouites obscurus Hall and Whitfield, King's U. S. Geol. Expl. 40th Pari., 



IV, 1877, p. 234, pi. 1, fig. 16. 

 Porambonites ? obscurus Hall aud Clarke, Pal. New York, VIII, Pt. II, 1893, 



p. 228. 

 ioc. White Pine district, Nevada. 

 Ohs. Based upon a single ventral valve which is insufficient to determine 



whether it belongs to Parastrophia or some rhynchonelloid. It is not a 



Porambonites. 



