BRACHIOPODA. 231 



Genus CONCHTDIUM, Linne. 1753. 



PLATES LXIV, LXV. LXVI, LXVII. 



1753. ConcMdium, Linne. Museum Tessinianum, p. 90, \i\. v, figs. 8, a, b. 



1766. HelminVwlitus, Linne. Sy.stema Naturae, ed. xii, vol. iv, p. 163. 



1798. Atwinites, HisiNriER. Minerograph. Anmerkning. ofvei- Gottlaiid ; Vet. Akad. Handling-, p. 285. 



1813. Pentamerits, Sowkrby. Mineral Conchology, vol. i, p. 73, pis. xxviii, xxix. 



1828. Qypldia, Daiman. Kongl. Vetenskaps Aka<i. Handlingar, pp. 93, 100. 



1839. Pentanienis, Sowbrby. Mni-chison's SiUiiian System, p. 615, pi. vi, figs. 8a-e. 



1841. Pentameriia, B.ismG'S.'R. Lethsa Suecicm, p. 74, pi. xxi, figs. 10 a-c. 



1843. Peiitamerus, A. Roemer. Die Versteinerungen des Harzgebirge.s pl- iv, fig. 16. 



1845. Pentaiiwrus, D'E ViijmKiuL. G6ol. de la Russie et des Mont, de I'Oural, vol. ii, pp. 113-118, 



pl. vii, figs. 1-3. 



1850. PodaiiieriK, A. Roembr. Beitr. zur geolog. Kenntn. der nordwest. Harzgeb., p. 59. 



1852. Pentame.rus, Hall. Palseontology of New York, vol. ii, p. 341. pl. Ixxix, figs. 1. 2. 



1854. Pentamerus, Davidson. Introd. British Foss. Brach., p. 97, pl. vii, fig. 116. 



1854. Pentamei-us, Geobnewaldt. Memoires Sav. Eti'ang. Acad. Imp. Sci. St. Pelersbourg, vol. vii, 



p. 26, pl. iv, fig. 15. 



1855. Pentamenis, Conrad. Proc. Acad. Nat. Sci. Philadelphia, vol. vii, p. 441. 

 1860. Pentamerus, Lindstrom. Gotland's Brachiopoden, p. 3'i5. 



1860. Pe^itameritfi, Km.aions. Manual of Geology, p. 107, figure. 



1861. Pentamerus, Billings. Canadian Journal, vol. vi, p. 269. 

 1863. Peiitaiiierii,s, Billings. Geology of Canada, p. 337, fig. 341. 



1867. Pentamerus, Hall. Twentieth Ann. Rept. N. Y. State Cab. Nat Hist., p. 37;{, pl. xiii, figs. 22-24. 

 1867. Pentamerus, Hall. Palaeontology of New York, vol. iv, pp. 369-374. 



1867. Pentamei-us, Davidson, British Silurian Brachiopoda, p. 142, pl. xvi, figs. 1-3 ; pl. xvii, 

 tigs. 1-10; pi. six, tig. 3. 



1871 . AntirhyncJumella, Pentamerus, Quknstedt. Petrefactenkunde Deutschlands ; Brachiopoden, p.231, 



pl. xliii, tigs. 36-a9. 



1872. Pentamerus, Hall and Whitfield. Twenty-fourth Aim. Rept. N. Y. State Mus. Nat. Hist., 



pp. 184-186. 

 1875. Pentamerus, Hall and Whitfield. Twenty-seventh Ann. Rept. N. Y. State Mus. Nat. Hist., 

 pl. X, figs. 1-12. 



1879. Pentamerus, Emerson. Geol. Frobisher Bay; Hall's Arctic Exped., App. Ill, p. 578. 



1S79. Pentame.rus, Barrandb. Systeme Silurien du Centre de la Boh?me, vol. v, pl. xx, tigss. 9-14 ; 

 pl. xxi, figs. 10-13 ; pl. xxiv, fig. 8 ; pl. Ixxix, figs. 1-3. 



1880. Pentamerus, Ani/elin and Lind.strom. Fragmenta Silui-ica, p. 24, pl. xx, figs. 1-29. 



1881. Zdimir, Barrande. Systiime Silurien, vol. vi, p. 171, pl. ccxcii, figs. 17-20. 



1882. Pentamerus, Whitfield. Geology of Wisconsin, vol. iv, p. 314, pl. xxiii, tigs. 1, 2. 



1886. Q-ypidia, Ulrich. Contributions to Ameiican Palseontology, vol. i, p. 28, pl. iii, fig. 2. 



1887. Conclddium, CEhlert. Fischer's Manuel de Conchyliologie, p. 1311, fig. 1097. 



1888. Pentamerus, Novak. Zeitschr. der deutsch. geolog. Gesellsch., vol. xl, p. 588. 



1889. Pentamerus, Nettelroth. Kentucky Fossil Shells, pp. 53, 55, 57, 60, pl. xxvii, figs. 14-16 ; 



pl. xxviii, figs. 1-8 ; pl. xxix, figs. 1, 2, 17. 



1890. Pentamerus, Gagel. Brach. der camb. und silur. Gescliiebe im Diluv. der Pi-ovinz. Ost- and 



Westpreussen, pp. 53, 54, pl. iv, figs. 2-4. 



1891. Pentamerus, Wuiteaves. Canadian Record of Science, p. 295, pl. iii, figs. 3, 4. 



1892. Pentamerus, R. Ethbridgb, Jr. Pentameridae of New South Wales, ; Recoi-ds Geol. Survey 



N. S. W., vol. viii, pt. ii, p. 49, pl. x, tigs. 1-8 ; pl. xi, tigs. 1-4, 10-12. 

 1892. Pentamerus, Miller. Seventeenth Ann. Rept. State Geologist Indiana, p. 687, pl. xiii, tigs. 5, 6. 



