100 PROCEEDINGS OP THE ACADEIVIT OP [1886. 



(1) RHOPALOCRINUS W. & Sp., Rev. i, p. 57. 



This genus was referred by us provisionall}^ to the Ichthyo- 

 crinidge, where it cannot remain, as it has not the articulate 

 structure so characteristic of that group. We now place it with 

 the Inadunata, as the arms were evidently free from the first 

 radials ; but we are yet in doubt if it should go with the Sym- 

 bathocrinidae, Cupressocrinidae, Gasterocomidae, or be made a 

 distinct group. 



Family XV. CUPRESSOCRINID-E Roemer. 



The Cupressocriuidse in our classification consist only of the 

 genus C2ipressocrinus. Schultze, Zittel and De Loriol, however, 

 added Symbathocrinus and Phimocrinus, which unquestionably 

 differ from Gupressocrinus more than Pisocrinus and Triacrinus, 

 for which they proposed a separate group. 



GUPRESSOCRINUS Goldfuss. 

 (PI. 4, fig. 1.) 



1826. Goldfuss, Petref. Germaniae, i, p. 330. 



1835. Agassiz, Memoir Soc. des Sci. natur. d. Neuchatel, i, p. 198. 



1838. Goldfuss, Nova Acta. Ac. Leopold. XIX, i, p. 330. 



1839. Miinster, Beitrage z. Petref., p. 3. 



1845. F. Roemer, Leonh. and Bronn's Jahrbuch, p. 291. 



1850. D'Orbigny, Prodrome de Paleont., i, p. 103. 



1852. Quenstedt, Handb. d. Petref. (Ed. 1), p. 623. 



1855. Sandberger, Versteinerungen Nassau's, p. 401. 



1855. F. Roemer, Lethsea Geognostica (Ausg. 3j, p. 230. 



1857. Pictet, Traite de Paleont., vol. iv, p. 306. 



1862. Dujardin and Hupe, Hist, natur. des Zooph. Echin., p. 110. 



1866. Schultze, Monogr. Echin. Eifl. Kalk., p. 14. 



1879. Zittel, Handb. d. Palaeontologie, i, p. 348. 



1880. Quenstedt, Handb. d. Petref., -Ed. 3, p. 962. 



1882. De Loriol, Paleontologie Franc, tome xi, p. 47, not Ad. Roemer, 

 Harzegebirge, p. 8 ; nor McCoy, Syn. Brit. Palseoz. Foss., p. 117. 

 Syn. Halocrinites Steininger, 1831, Mem. Soc. Geol. de France, i, 



p. 349. 

 Syn. Cyprensocrinites Steininger, 1849, Verstein. Uebergangsgeb. 



d.Eifel, p. 20. 

 ^yn.CypeUocrinites^tQ\m\\ge.Y, 1853, Geogn. Beschr. d. Eifel, p. 36. 



Goldfuss, in 1826 (Petrefacta Germania), gave a good descrip- 

 tion of this genus, to which he made additions in 1838 (Beitrage 

 zur Petrefactenkunde, p. 334). At both times he expressed the 

 conviction that the ventral covering was probably membranous. 



