136 V. A. BATHEB, CEINOIDEA OF GOTLAND. 



Notes on Angklins figures: 



Tal). IV, fig. 6 a. The ornament on the plates is not regular as here shown, and 



is nothing more than a roughness produced by weathering. The arm-ossicles are more 



tumid, and the facet does not occupy the whole width of the radial. 



Tab. XX, fig. 5, represents the cup and arms verv fairlv; hut the plates of the 



ventral sac are much too smooth. 



Localities in Gotland: Specimens a and /) come from Follingbo (f); c cornes froin 

 the Klinteberg (f); rf, of unknown locality, is a.lso probably from hed f; specimens e and 

 / and 74 other cups are from the Klinteberg (f), while two eups come from Wisby (<1). 



Also found at Dudley, England. 



Cyathocrinus striolatus. 



(Platt- VII, figs. 218—221.) 



1878 Angelin, Iconographia, p. 23, Tab. XIX, fig. 9, 9 a. 



Diagnosis. 



Dorsal cup a straight cone, with slight axial folding, the plates covered with fine 

 radiating striae; height about r / 8 width. Facet occupies 3 /-, width of radial, is horseshoe- 

 shaped and at about right-angles to the slope of the plate. Stem round, with alternating 

 ossicles and large pentagonal lumen. 



There were found in the collection four specimens labelled with tliis name; hut of 

 these only one, that figured, can be separated from other Gotland species (<i) (fig. 221). 

 There are, however, two other cups (h, fig. 2 IS, and c, i\^. 220) that I would refer to 

 tliis species. 



Deseription. 



The Dorsal Cup forms a cone, the sides of which are almost straight, but slightlv 

 concave in the radii, and form with the vertical an angle of about 21°. The plates are 

 axially folded; but the foldings are not always very clear, and often consist in nothing 

 more than a depression of the plates at their angles. In a the surface of the plates i> 

 covered with fine radiating striae, as shown in Angklins figure; but these are obliterated 

 in the other specimens. The three specimens are of different sizes, the type being of the 

 raiddle size; it also is the best preserved and least distorted specimen of the three. The 

 measurements of a are: height 8.5 mm.; width at base 4.25 mm.; width above 9.7f> mm. 



[BB 5; vary in height in the three specimens, being proportionately higher in the 

 smallest and lower in the largest. In a the} - are 2.:; mm. high and 3 mm. in greatesi 

 width. Their lower margin is slightly raised in a rim. 



BB .*>; 1 are hexagonal and are 4.5 mm. high. Post. 15 is heptagonal and \ hud. 

 hiffh. All are from I mm. to 4.5 mm. in sreatest width. 



O O 



