HEXACRINUS. 195 



H. anaglypticus, Goldfuss, 1 is the nearest species given by Schultze. It seems 

 separated by its more conical or less vasiform cup, its coarser and more 

 irregularly confluent markings, and its less flattened basal circlet. 



4. Hexacrinus ornatus, Goldfuss, sp. Plate XXII, figs. 11, 11a. 



1839. Plattcrinus ornatus, Goldfuss. Nova Acta Acad. Leop., vol. xix, pt. 1, 



p. 347. 

 1855. Hexacrinus kciiinatus, Sandberger. Verst. Rhein. Nassau, p. 398, fig. 10. 

 1807. ornatus, Schultze. Denksch. Kaiser. Acad. "Wisseusch. Wien, 



p. 11, pi. viii, figs. 4 — 4tf; and pi. x, 

 figs. 9 — 9 b (upper figures only). 

 1SS1. — — Wachsmuth and Springer. Proc. Acad. Nat. Sci. 



Philad., p. 251, 

 18S9. IVhidborne. Geol. Mag., dec. 3, vol. vi, p. 79. 



Description. — Dorsal cup small, wide, with short erect sides. Attachment of 

 column very large. Basal circlet wide, nearly flat or saucer-shaped, almost equal 

 in size to width of the cup, regularly hexagonal in outline, consisting of three 

 plates, and ornamented by four rows of exceedingly coarse tubercles, the lowest of 

 which is turned outwards so as to form a raised ring of about eight sharp tubercles, 

 and is separated from the rest by a very short neck. Radials five, flat, erect, short, 

 covered by a few very coarse ridges and nodules, having a tendency to radiate, 

 which sometimes form steep irregular walls. Upper part of calyx unseen. 

 Suture-lines very wide, bevelled, and deep. 



Stem consisting of short convex columnals, round which is a median band of 

 about eight large, sharp, distant tubercles. 



Size of calyx. — Width 17 mm., height 11 mm. or more. 



Locality. — Wolborough. One calyx is in the Torquay Museum. A portion of 

 stem is in Mr. Vicary's Collection, and another portion, which may belong to the 

 same species, is in the Torquay Museum. I have found a few detached segments 

 of the stem at Lummaton. 



Remarks. — The great resemblance of these fossils, both calyx and stem, to the 

 German figures of H. ornatus seems to leave no doubt of their identity. 



The dorsal cup has deeper and more elaborate ornamentation than occurs in 

 most of Schultze's figures, and its base is flatter and its attachment smaller. 

 With Sandberger's type of H. echinatus, on the other hand, it agrees better, only 

 differing in being rather larger. Schultze, after an examination of Sandberger's 

 type, united it with Goldfuss's species, no doubt correctly. 



1 1867, Schultze, ' Denksch. k. Acad. Wissen. Wien,' vol. xxvi, p. 184, pi. viii, figs. 1 — 1 i. 



