PUBLICATIONS QUOTED AND REFERRED TO. 245 



18. G. Hambach : Description of new species of Paleozoic Echinodermata. Trans. 



Sf. Louis Acad. Sc, vol. iv, 1878-'86, p. 548. 



19. Eobert T. Jackson : Studies of OZ/g'oporMs (abstract of a paper read). Science, new 



series, vol. ii, November 22, 1895. 



20. Otto Jaekel : Ueber die alteste Echiniden-Gattung Bothriocidaris. Sitzungs- 



Ber. Gesellsch. Naturforsch. Freunde, Berlin, Jahrg, 1894. 



21. W. Keeping: On the discovery of Tiffe'/omtes in Britain. Quart. Journ. Geol. Soc^ 



London, vol. 32, 1876. 



22. W, Keeping: Notes on the Paleozoic Echini. Quart. Journ. Geol. Soc, Lon- 



don, vol. 32, 1876. (New facts about Ferischodomus, and describes Rhoechinus 

 irregularis, genus and species no v.) 



23. C. E. Keyes: Geol. Surv. Missouri, vol. iv, 1894. 



24. C. R. Keyes: Synopsis of American Paleozoic Echinoids. Froc. Joiva Acad. 



Sc. for 1894, vol. ii. (This paper contains very complete references to publi- 

 cations on American Paleozoic Echini.) 



25. Sven Loven : Etudes sur les Echinoidees. Kongl. Svensk. VetensJcaps-Akad.r 



Handl., B. 11. Stockholm, 1872. (Contains numerous references to publica- 

 tions on Paleozoic Echini.) 



26. Sven Loven: On Pourtalesia. Kongl. Svensk. Vetenskaps-Akad., Handl, B. 19. 



Stockholm, 1883. 



27. Sven Loven: Echinologica. Bihang till Kongl. Svensk. Vetenskaps-Akad. , Handl. ,. 



B. 18 : iv. Stockholm, 1892. 



28. F. M'Coy: Synopsis of the Carboniferous limestone fossils of Ireland, 1844. 



(Describes species of Archseocidaris and Falseechinus.) 

 2d. F. M'Coy: (Paleozoic Echinodermata) in Contributions of British Fa.lseontology f 



1854. 

 39. Meek and Worthen : Geological Survey of Illinois, vol. ii, 1866. 



31. Meek and Worthen: Geological Survej'' of Illinois, vol. v, 1873. 



32. Meek and Worthen : Proceedings of the Academy of Natural Science, Philadel- 



phia, vol. xxii, p. 34, 1870. (Describe Lepidesthes coreyi.) 



33. S. A. Miller : Remarks upon the Kaskaskia group. Journ. Cine. Soc. Nat. Hist. , 



vol. ii, 1879. (Describes Lepidesthes formosus.) 



34. Miller and Gurley : Descriptions of some new species of Invertebrates from the 



Paleozoic rocks of Illinois. Bull. LUinois State Mus. Nat. Hist., no. 3, 1894. 

 (Describe new species of Melonites, Oligoporus and Archseocidaris. ) 



35. Joh. Miiller: Ueber neue Echinodermen des Eifeler Kalkes. Ahhandl. K. Akad. 



d. Wiss., Berlin, 1856. {De^cvihe^ Lepidocentrus.) 



36. F. Roemer: Ueber den Bau von Melonites. Wiegmaim!' s Archiv, 1855. 



37. F. Schmidt: Miscellanea Silurica, ii, p. 36. Mem. Acad. Lnn., St. Fetersburg, 



vol. xxi, no. 11, 1874. (Describes and figures species of Bothriocidaris.) 

 3S. L. Schultze: Monographic der Echinodermen des Eifeler Kalkes, 1866. (De- 

 scribes Lepidocentrus and Xenocidaris. ) 



39. Wy ville Thomson : On a new Paleozoic group of Echinodermata. Edinburgh 



New Fhil. Journ., 1861, vol. xiii, p. 106. (Describes Echinocystites.) 



40. W. AVaagen : Salt Range. 3fem. Geol. Sarv. Lndia, ser. xiii, vol. i, part v. (De- 



scribes Cidaris forbesiana, (Waagen).) 



41. C. A. White: Contribution to Invertebrate Paleontology, no. 8. Fossils from 



the Carboniferous Rocks of the Interior States. U. S. Geol. and Geog. Surv. 

 Terr., 1873, part 1. (Describes Lepidesthes colletti, White.) 



