CUPRESSOCRINUS. 209 



ring seems quadrilateral, and its surface is rugose, which would at once distinguish 

 it if well preserved. 



G. gracilis, Goldfuss, 1 has a larger infra-basal ring, and is more conical and 

 generally much more elongate. 



2. Cupbessoo binds Schlotheimii, Steininger, sp. Plate XXIV, figs. 3, 3 a, 3 b, 5, 5 a. 



1834. Halocrinites Schlotheimii, Steininger. Mem. Soc. Geol. Fr., vol. i, 



]>. 349, pi. xxi. fig. 1, 1 a. 



1838. — pyramidalis, Steininger. Bull. Soc. Geol Fr., ser. 1, vol. ix, 



p. 295, pi. vi, figs. 1, 2. 



1839. Cupressocrinus abbreviates, Goldfuss. Nova Act. Acad. Leop., vol. i, 



p. 333, pi. xxx, fig. 4. 

 1850. — Urogalli, F. A. Homer. Beitr. Harzgcb., part 1, p. 9, 



pi. ii, fig. 7. 

 1853. Schlotheimii, Steininger. Geol. Besch. Eif'el, p. 36. 



1855. — nodosus, Sandberger. Verst. Rhein. Nassau, p. 401, 



pi. xxxv, figs. 5 — 5 c. 

 1855. — abbreviates, F. Fumer. In Broiin's Leth. Geogn., 



edit. 3, vol. i, p. 232. 

 1867. abbreviatus, Schultze. Denksch. Kais. Acad. Wissensch., 



vol. 20, p. 131, pi. 2, figs. 

 1—13, aud pi. iii, fig. 3. 

 1876. — F. Homer. Leth. Pal., pi. xxvii, fig. 11. 



1SS6. — Wachsmuth and Springer. Proc. Acad. N. S. 



Philad., p. 105. 



Description. — Dorsal cup of moderate size, shallow, vasiform. Infra-basals 

 very small, united to form a pentagonal ring, very slightly wider than the column, 

 which is seen from its facet of attachment to have been quadrate, and pierced 

 by four lateral canals. 



Basals five, equal, pentagonal, moderately convex or tumid, set obliquely; 

 their height equal to their greatest width. 



Radials five, equal, pentagonal, slightly convex, their height being half their 

 greatest width, and their upper margins being straight horizontal lines, so that the 

 section of the cup at this point is a regular pentagon. (Consolidating apparatus 

 unseen in the English specimens.) The only ornamentation visible being a linear 

 groove parallel and close to the margins of the basals and radials. 



- Arms with several of the plates apparently anchylosed together, so as to appear 

 a single massive plate when viewed from within. Arm-plates consisting of two 

 parallel steep triangular ridges forming a wide angular ambulacral groove, 



1 1826-34, Goldfuss, ' Petref. Germ.,' vol. i, p. 213, pi. lxiv, fig. 5. 



27 



