BIBLIOGRAPHIC LIST OF GENERA AND SPECIES. 63 



Archlnacella instabills incurva Ulrich and Scofield. 



Archinacella instabilis var. incurva Ulrich. and Scofield, Geol. Minnesota, 3, pt. 



2, 1897, p. 835, pi. 61, figs. 21-23. 

 Black River (Decorah): Goodhne County, Minnesota. 

 Holotype— Cat. No. 45689, U.S.N.M. 



Archinacella orbiculata (Hall). 



Cariuaropsis orbiculatus Hall, Pal. New York, 1, 1847, p. 306, pi. 83, figs. 8a-c. 

 Helcion orbiculatus D'Orbigny, Prodr. Pal., 1, 1849, p. 9 (gen. ref.). — Emmons, 



Amer. Geol., 1, pt. 2, 1855, p. 164. 

 Archinacella orbiculata Ruedemann, Bull. New York State Mue., 162, 1912, p. 



108, pi. 7, figs. 1-6. 

 Trenton (Snake Hill): Snake Hill, Waterford, etc., New York. 



Archinacella patelliformis (Hall). 



Cariuaropsis patelliformis Hall, Pal. New York, 1, 1847, p. 183, pi. 40, figs. 2a, b. — 



Miller, Cincinnati Quart. Jour. Sci., 1, 1874, p. 314; N. A. Geol. Pal., 1889, 



p. 400, fig. 659.— Lesley, Geol. Surv\ Pennsylvania, Rep. P 4, 1889, p. 117, 



figs. 

 Helcion patelliformis Emmons, Amer. Geology, 1, pt. 2, 1855, p. 164, pi. 6, fig. 1. — 



D'Orbigny, Prodr. Pal., 1, 1849, p. 9 (gen. ref.). 

 Archinacella patelliformis Ulrich and Scofield, Geol. Minnesota, 3, pt. 2, 1897, 



p. 832 (gen. ref.).— Weller, Geol. Surv. New Jersey, Pal., 3, 1903, p. 174, pi. 



12, figs. 1, 2.— Grabau and Shimer, N. A. Index Fossils, 1, 1909, p. 606. 

 Black River-Maysvnie: Middleville, etc., New York (Trenton); New Jersey; 



Ohio; Missouri, etc. 



Archinacella perovalis (Whitfield). 



Metoptoma perovalis Wliitfield, Ann. Rep. Geol. Surv. Wisconsin, 1878, p. 74; 



Geol. Wisconsin, 4, 1882, p. 211, pi. 5, figs. 13 and 14. 

 Archinacella perovalis Ulrich and Scofield, Geol. Minnesota, 3, pt. 2, 1897, p. 



830, pi. 82, figs. 3 and 4. 

 Metoptoma explanata Sardeson, Bull. Minnesota Acad. Nat. Sci., 3, 1892, p. 



337, pi. 6, figs. 7, 8. 

 Black River (Platteville) : Minneapolis, Minnesota; Beloit, Wisconsin. 



Archinacella phillipsi (Walcott). 



Metoptoma phillipsi Walcott, Mon, U. S. Geol. Surv., 8, 1884, p. 83, pi. 1, figs. 



4,4a. 

 Archinacella phillipsi Ulrich and Scofield, Geol. Minnesota, 3, pt. 2, 1897, p. 



829 (gen. ref.) 

 Upper Pogonip: Pogonip Ridge, Eureka District, Nevada. 

 Cotypes.—G&t. No. 17359, U.S.N.M. 



Archinacella pileolum (Whitfield). 



Triblidium pileolum Whitfield, Bull. Amer. Mus. Nat. Hist., 2, 1889, p. 46, pi. 7, 



figs. 15-17. 

 Tryblidium pileolum Lesley, Geol. Surv. Pennsylvania, Rep. P 4, 1890, p. 1236, 



figs. 

 Archinacella pileolum Ulrich and Scofield, Geol. Minnesota, 3, pt. 2, 1897, p. 826 



(gen. ref.). 

 Canadian (Beekmantown) : Beekmantown, New York, 



Archinacella powersi Ulrich and Scofield. 



Archinacella powersi Ulrich and Scofield, Geol. Minnesota, 3, pt. 2, 1897, p. 829, 

 pi. 61, figs. 3-5, p. 820, fig. la. 



