SYNOPSIS OF GENERA. 
XXXVll 
1842. Metopias, Eichwald. Urwelt Russlands. 
1843. Metopias, Eichwald. Beitr. zur Kenntn. <1. Russ. Reichs. 
1843. Metopias, Lbuchtenberg. TMerrest. des Urwelts. 
1843. Paradoxides, Goldfuss. Neues Jahi'b. fiir. Min. 
1843. Arctimiviis, Castelnau. Essai sur le Syst. Sil. de I’Amerique Septentrionale. 
1843. Platynotm, Hall. Geol. N. Y., Rept. Fourth District. 
1843. Lichas, Bdemeister. Organization der Trilobiten. 
1843. Nuttainia, Portlock. Geolog. Rept. Londonderry, etc. 
1844. AsaplmK, Eichwald. Silursch. Esthlands. 
1844. Arges, D’Archiac and De Verneuil. Die lelt. palaozoisch. Gebilde iin Norden von Deutschl. u. 
Belgien. 
1845. Niottainia, Emmrich. Neues Jahrbuch ftii- Min. 
1845. Lidias, Loven. Ofversigt af Kongl. Vetensk. Akad. Foi'handl. 
1845. Lichas, Beyrich. Ueber bohm. Trilobiten. 
1845. Calymene, Murchison. Quart. Jour. Geol. Soc. 
1846. Lichas, Baeeandb. Notice prelim, sur le Syst. sil. Boheme. 
1846. BroTttms {partim), Barrande. Notice prdlim. sur le Syst. sil. BohSme. 
1846. Trilobites {partim), Barrande., Notice prelim, sur le Syst. sil. Boheme. 
1846. Lichas, Beyrich. Untersuchungen ueber die Trilobiten. 
1846. Arges, Beyrich. Untersuchungen ueber die Trilobiten. 
1847. Calymene, McCoy. Silurian Foss. Ireland. 
1847. Corydocephalus, Corda. Prodrom Monog. bohmischen Trilobiten. , 
1847. Bio'anopeltis, Corda. Prodrom Monog. liohmischen Trilobiten. 
1847. Acanthopyge, Corda. Prodrom Monog. bohmischen Ti-ilobiten. 
1847. Lieranogmus, Corda. Prodrom Monog. bohmischen Trilobiten. 
1847. Platynotus, Hall. Palieontology N. Y., vol. i. 
1848. Lichas, Salter. Mem. Geol. Surv. United Kingdom. 
1849. Lichas, McCoy. Ann. Mag. Nat. Hist. 
1850. Lichas, Fletcher. Proc. Geol. Society. 
1852. Lichas, Barrande. Syst. Silur. du Centre de la EohSme, vol. i. 
1854. Lichas, Angelin. Palaeontologia Scandinavica. 
1854. Lichas, Eichwald. Grauwacksch. Liv. und Esthlands. 
1855. Lichas, Emmons. American Geology. 
1857. Lichas, Eichwald. Beitr. zur geogr. Verbreit d. foss. Thiere Russlands. 
1857. Lichas, Nibskowski. Archiv. fiir Naturk. Liv, Esth und Kurlands. 
1858. Lichas, Hoffmann. Verhandl. der kaiserl. Mineral. Gesellsch. 
1858. Lichas, Schmidt. Archiv. fiir Naturk. Liv, Esth und Kurlands. 
1858. Lichas, Dethleff and Boll. Archiv. d. Vereins d. Freund, d. Naturgesch. in Mecklenburg. 
1859. Lichas, Hall. Palieontology N. Y., vol. iii. 
1859. Lichas, Nieskowski. Archiv. fiir Naturk. Liv, Esth und Kurlands. 
1860. Lichas, Eichwald. Lethcea rossica. 
1861. Lichas, C. F. Rcemer. Foss. Fauna d. Silur. Diluvialgeschieb. von Sadowitz. 
1862. Lichas, Hall. Sixteenth Rept. N. Y. State Cab. Nat. Hist. 
1862. Lichas, Hellmann. Die Petrefacten Thiiringens. 
1862. Lichas, McCoy. Synopsis Silur. Foss. Ireland. 
1863. Lichas, Hall. Transactions Albany Institute. 
1865. Lichas, Winchell and Marcy. Mem. Boston Society Nat. Hist. 
1865. Lichas, Meek and Y/orthen. Proceed. Acad. Nat. Science. 
1865. Lichas, Billings. PaliEOzoic Fossils, vol. i. 
1866. Lichas, Billings. Cat. Silur. Foss. Anticosti. 
1867. Lichas, Hall. Twentieth Rept. N. Y. State Cab. Nat. Hist. 
1869. Lichas, Karstens. Beitv. zur Landeskarte von Schleswig-Holstein. 
