76 Trans. Acad. Sci. of St. Louis. 



1874. Xenocidaris davigera. Loven, Kongl. Svens. Vetens. 



Akad. Handl., bd. 11, no. 7, p. 44. 

 1900. Xenocidaris clavigera. Hesse, Neu. Jahrb. Miner. 



Geol. u. Pal., beil. bd. 13, p. 212. 

 Geological formation and locality: Devonian, Miihlenberg 

 near Gerolstein. 



2. Xenocidaris conifera Schliiter. 



1881. Xenocidaris conifera. Schliiter, Verhdl. Nat. Ver. 



Preuss. Kheinl. u. Westfal. Bonn, Sitzungsb., bd. 38, p. 



212. 

 Geological formation and locality: Middle Devonian, HiUes- 

 heimer-Mulde between Kerpen and NoUenbach. 



3. Xenocidaris cylindrica Schultze. 



1866. Xenocidaris cylindrica. Schultze, Denkschr. Akad. 



Wis. Wien, Math. Naturw. CL, no. 2^, p. 126, taf. 



13, figs. 4-4 c. 

 1874. Xenocidaris cylindrica. Loven, Kongl. Svens. Vetens. 



Akad. Handl., bd. 11, no. 7, p. 42. 

 Geological formation and locality: Devonian, Gerolstein. 



BIBLIOGRAPHY. 



*1 Agassiz (A.). Report on the Echinoidea dredged by 

 H.M. S. Challenger. 1881. 



t2 . A Bibliography of the Echinodermata. 



Bull. Mus. Comp. Zaol., vol. 10, no. 2, 1882. 



3 . Calamocrinus diomedae, a new stalked Crinoid, 



with notes on the Apical System and the Homol- 

 ogies of the Echinoderms. 



Mem. Mus. Comp. Zool., vol. 17, no. 2, 1892. 



* An asterisk prefixed to a title indicates that the author has not seen 

 the article. 



t A dagger prefixed to a title indicates that the article is in the library 

 of Dr. Hambach. 



