BRACHIOPODA. 241 



Genera (1) BARR ANDELLA, nom. propos.; (2) PENT AMERELL A, 

 Hall, 1867; (3) SIEBERELL A, (Ehlert, 1887; (4) GYPIDULA, 

 Hall, 1867. 



PLATES LXXl, LXXII. 



(3) 1827. Atrypa, Daiman. Kongl. Vetenakaps. Acad. Handlingpar, p. 130. 



(3) 1834 Terebratula, vox Buck. Ueber Terebi-ateln. 



(3) 1839. Atrypa, J. db C. Sowkrby. Silurian System, pi. xii, fig. 4. 



(1) 1839. Atrypa, J. db C. Sowkrbt. Silurian System, pi. xiii, fig. 8. 



(2) 1841. Atrypa, Conrad. Geol. Survey N. Y. ; Ann. Kept. Palaeont. Dept., p. 55. 



(3) 1S43. Terebratula, A. Rokmer. Verstein. des Harzgebirges, p. 19, pi. xii, fig. 25. 



(3) 1845. Pentamerug, dk Verneuil. Geologie de la Russie, etc , vol. ii, p. 120, pi. viii, figs. 'Aa-g. 

 (1) 1848. Pentamerus. Davidso.v and dk Verneuil. Bull. Soc. Geol. de France, second ser., vol. v, 



pp. 333, 346 



(4) 1852. Atrypa, Owkn. Geol. Survey Wisconsin, Iowa and Minnesota, p. .')83, pi. iii A, fig. 4. 



(1) 18.52. Pentaments, Hall. Paljeontology of New York, vol. ii, p. 81, pi. xxiv, figs. 1 a-d. 



(2) 1857. Peiitaments, Hall. Tenth Ann. Rept. N. Y. State Cab. Nat. Hist., p. 120, tigs. 1-10. 

 (I) 1857. Pmitameriui, Billinq.s. Rept. Piog. Geol. Survey of Canada, p. 296. 



(3) 1857. Pentainenui, Hall. Tenth Ann. Rept. N. Y. State Cab. Nat. Hist., p. 105, figs. 1-3. 



(1) 1858. Peutaiiierus, V. Schmidt. Silur. Format. Kstlands; Archiv fiir Naturkunde, vol. ii, p. 212. 



(4) 1858. Pentamerux, Hall. Geology of Iowa, vol. i, pt. 2, p. 514, pi. vi, figs. 2a-c. 



(3) 1859. Pentainemn, Hall. Palseontology of New York, vol. iii, p. 257, pi. xlvi, figs. 1 a-z ; pi. xlvii, 



figs. 1 a-m. 



(3) 1859. Pentaineriis, voji Eichwald. Lethaea ross-ica, vol. i, pi. xxxv, figs. 19, 20. 



(1) 1860. Pentamerag, Lindstrom. Ofversigl kongl. Veten. Acad. Fdrhandl., p. 365, pi. xii, tig. 6. 



(2) 1860. Pmtatnei-us, Spirifer, Hall. Thirteenth Ann. Rept N. Y. State Cab. Nat. Hist., pp. 86, 90. 



(3) 1860. PeiUamerus, F. Roemer. Silur. Fauna des westl. Tennessee, p. 73, pi. v, fig. 11. 

 (1) 1861. Pentainerux, Hall. Rept. Progre.is Geolog. Survey Wisconsin, p. 2. 



(1) 1863. Pentameru.1, Billings. Geology of Canada, p. 316, fig. 327. 



(3) 1865. PentameriM, WiNoiiELL and Marcy. Mem. Boston Soc. Nat. Hist., vol. i, p. 94, pi. ii, fig. 11. 

 (I) 1866. PeiUamerus, BiLLiNdS. Catalogue Silurian Fos.sils Anticosti, p. 45. 



(4) 1866. PeJitaiaerim, Meek and Worthen. Geol. Survey Illinois, vol. ii, p. 325. 



(1) 1867. Peiilamtrits, Davidson. British Silurian Brachiopoda, p. 149, pi. xvii, tigs. 11-14. 



(1) 1867. Penlaiiurtui {Pt7itameiella}, Hkll. Twentieth Ann. Rept. N. Y. State Cab. Nat. Hist., 



p. 374, pi. xiii, figs. 18-21. 



(2) 1867. PentataertUa, Hall. Palajontology of New York, vol. iv, pp. 373, 375-379, pi. Iviii, 



figs. 1-21, 24-43. 



(3) 1:67. Pentamerus, Davidson. British Silurian Brachiopoda, p. 145, pi. xv, figs. 13-23. 



(4) 1867. Oypidula, Hall. Palaeontology of New York, vol. iv, pp. 373, 380, 381, pi. Iviii, figs. 22,23; 



pi. Iviii A, figs. 1-8. 

 (4) 1868. PcTi/oraCTTM, Meek and WoBTHBN. Geological Survey of Illinois, vol. iii, pp. 428, 429, pL xiii, 



tigs. 5, 6. 

 (I) 1871. Pentannerm, (Juenstkdt. Petrefactenkunde Deutschlands ; Biachiopoden, p. 222, pi. xliii, 



tigs 44, 45. 

 (1) 1875. Pentamerus, Hall and Whitfield. Palieontology of Ohio, vol. ii, p. 138, pi. vii, tigs. 7, 8. 

 (3; 1878. Pentamerus, Kayseb. Abhandl. zur geol. Specialkarte von Pi-eussen, etc., Bud. 2, Heft 4, 



pp. 156-159, pi. xxvii, figs. 1-9, 13. 

 (4) 1878. Oypidula, Calvin. Bull. U. S. Geol. Survey of the Terr., vol. iv, p. 730. 

 (1) 1879. Pentamerus, Clorinda, Barrandk. Syst^me Silurien, vol. v, pis. xxii, xxiv, cxix, cxxxviii. 



