LITERATURE OF ECHINODERMATA. 467 



67. "Ueber Cystideen." Von Buch. 1845. (Translated in 'Quart. 



Journ. Geol. Soc. Lond.' 1845.) 



68. " Russische Sphaeroniten." Von Volborth. 1846. 



69. " British Fossil Cystideae." Edward Forbes. ' Mem. Geol. Survey,' 



vol. ii. part ii. 1848. 



70. "Twentieth Report on the State Cabinet." James Hall. 1868. 



(Silurian Cystideans.) 



71. " Systeme Silurien du Centre de la Boheme." (Cystideans.) Bar- 



rande (W. Waagen). 1888. 



Blastoidea. 



72. " Monographie der fossilen Crinoideen-Familie der Blastoideen." 



Ferdinand Roemer. 185 1. 



73. "Catalogue of the Blastoidea in the Geological Department of the 



British Museum." 1886. R. Etheridge, jun., and P. H. Car- 

 penter. 



74. " Notes on Echinodermata." Rofe. ' Geol. Mag.,' Dec. i., vol. ii. 



1865. 



