214 :\rr. F. A. Batlier ou Bntish Fossil Crinoids : 



Cyathocrinus mimus, MS. Museum labels by J. W. Salter. 

 Cjjathncrijms nndnlosus, nom. nud. pars, i. e. Museum labels by .T. W. 



Salter, but not the spoc-imen said to be so referred to in Cat. Camb. 



Sil. Foss. p. 123. 



The description, measurements, and diagrams of tliis species 

 given in this paper are based entirely on British specimens, 

 while in the Swedish paper reference is made throughout to 

 Gotland specimens. Thus any differences due to differing 

 conditions may be more clearly appreciated. 



The British specimens examined are the following : — 



In the British Museum : 



57480, crown and half an inch of stem, seen from the right 



side, and showing the ventral sac crossing between 



the arras. iVfatrix a blue-grey shale. Dudley. 



From the collection of Mr. S. Allport, and formerly 



labelled C. nodulusus. (PI. XIII. fig. 1.) 

 E 1450, crown, free from matrix, which was a very soft yellow 



shale ; shows origin of ventral sac. Dudley. From 



the collection of Mr. J. Johnson. (PI. XIII. fig. 2.) 

 E 5G19, the distal end of a ventral sac, referred with hardly 



any doubt to this species. Dudley. From the 



collection of Mr. J. Gray, of Hagley. (PI. XIII. 



fig. 6.) 

 57421, crown with 8 to 10 columnals; showing covei-ing- 



plates well ; with a rugose surface ])roduced by 



weathering. ^latrix a blue-grey shale. Tividale, 



Dudley. (PI. XIII. fig. 7.) 

 E G002, crown with plates of ventral sac well marked, and 



with a radial facet cx})oscd. Matrix a l)lue shale. 



Dudley. Johnson collection. (PI. XIII. figs. 8 



and 11.) 

 57142, arms with covering-plates and ventral groove well 



shown. In limestone. Dudlev. Gray collection. 



(PI. XIII. Hg. 10.) 

 570G0. a dorsal cup free from matrix; showing radial facet. 



Dudley. Gray collection. (Pl.XlIl.lig.il.) 

 E G003, dor.^al cup, rather broken but very characteristic ; 



.'<ho\ving shagreen ornament. Yellowish matrix. 



Dudley, From the collection of ]\lr. J. Ixofe. 



(PI. XIII. fig. 12.) 

 E 1367, arms and two thin transverse sections cf same. 



Dudley. Eofe collection. (Zincutype, p. 211, 



E 0004, Itipuitudinal and transverse thin sections of \.\w st»-m. 



