Greger-Eublastoidea 123 
Mesoblastus ETHERIDGE and CARPENTER, 1886. 
Catalogue of the Blastoidea, British Museum, p. 181. 
Metablastus ETHERIDGE and CARPENTER, 1886. 
Catalogue of the Blastoidea, British Museum, p. 196. 
Nucleocrinus Conran, 1842. 
Journal, Philadelphia Academy of Natural Sciences, vol. 8, p. 280. 
Olivanites Troost, 1849. 
American Journal of eras vol. 8, p. 419. 
Orbitremites Gray, 
Synop. Contents of eo British Museum, 42nd Edition, p. 63. 
Orophocrinus von SEEBACH, 1864. 
Nachs. Kgl. Gesellsch. Wissensch. zu Gottingen, p. 110. 
Pentremites Say, 1820. 
American Journal of Science, vol. 2, p. 36. 
Pentremitidea D’Orsicny, 1849. 
Prodromus de Paleontologie, vol. 1, p. 102. 
Saccoblastus Hamsacu, 1903. 
Transactions, St. Louis Academy of Science, vol. 13, pp. 42-44. 
Schizoblastus ETHERIDGE and CARPENTER, 1882. 
Annals and Magazine of Natural History, vol. 9, p. 243. 
Tricoelocrinus MEEK and WorTHEN, 1868. 
Proceedings, Philadelphia Academy of Natural Sciences, p. 356. 
Troostocrinus SHUMARD, 1865. 
Transactions, St. Louis Academy of Science, vol. 2, p. 384. 
