22 SMITHSONIAN INSTITUTION 



PLATE VIII 

 (All figures natural size except where otherwise stated) 



PAGE 



Figs. i-S. Calpiocrinus fimbriatus Angelin 158 



Fig. 1(7. One of the type specimens, original of Angelin, pi. 29^ figs. Tj, yya; from r. ant. radius. 

 Shows ray divided into 4 main rami bearing raraules ; BB entirely covered by IBB. 

 X2. Gotland (/). 



16. Basal view of same; points of BB exposed by removal of part of IBB, and only post. B 



visible naturally. X 2. 

 2(7, b. Right anterior and posterior views of the other cotype, Angelin, pi. 29, fig. yyb. A much 

 smaller specimen ; no RA ; and BB covered by IBB except small points. X 2. 



Gotland (/). 

 2r. Base of same from 1. ant. radius, showing points of BB exposed. X 2. 

 3. Fragment of specimen in similar condition as last, but with unusually high IBr. X 2. 



Wisby (/). 

 40, fc. Specimen with IBB broken away, showing how the greater portion of BB were covered 

 by them; posterior and basal views. Original of Angelin, pi. 26, figs. 8, 8a, figured as 

 C. heterodactylus. X 2. Wisby (/) . 



SO, b. Right anterior and posterior views of large complete crown from Fara. All BB, includ- 

 ing post. B, covered by IBB ; part of column attached showing the large, rounded, 

 nearly uniform columnals as in figs. 2a, b. Natural size. 

 Wenlock Gr. ; Silurian. Gotland, Sweden. 



All specimens in Riks Museum, Stockholm. 



Figs. 6-8. Calpiocrinus rotundatus n. sp 159 



Fig. 6a. Complete crown with greater part of stem, from right anterior radius. All BB and 

 greater part of RR covered by IBB ; stem with distally numerous intercalated thin 

 columnals. X 2. Author's collection. Wisby (/). 



66, c. Posterior and basal views of same ; stem detached at second nodal. X 2. 



7a. Fine specimen in the Riks Museum, with crown still more rotund ; r. post, radial view, 

 showing same stem character as last. X 2. Bara (/) . 



7&. Basal view of same; BB, RR, part of IBr and iBr covered by extraordinary growth of 

 IBB. X2. 



yc. Base of same with stem and part of IBB removed, showing the plates covered by IBB, and 

 the absence of RA. X 2. 



8. Vertical section from radius to interradius, showing relative proportion of plates ; com- 

 posed from figs. 4&, and yc; IBB are shaded with vertical lines, too faintly shown in 

 reproduction of the drawing. 

 Wenlock Gr. ; Silurian. Gotland, Sweden. 



