76 SMITHSONIAN INSTITUTION 



■ PLATE XXXV 



CAII fiaures natural size except where otherwise stated) 



^ PAGE 



Figs. 1-16, Ichthyocrinus gotlandicus Wachsmuth and Springer 275 



Fig. la. The type, original of Angelin, pi. 22, figs. 20, 21, as /. laevis; r. post, radial view. Shows 



BB barely exposed at their angles; RA under r. post, ray; and 3 IIBr. X 2. 



Likkershamm (c). 

 i&. Opposite side of same. 



2a. Fragmentary specimen from same locality, lateral view. 



2b. Basal view of same. IBB resorbed ; BB and RA confined to column facet. X 2. 

 30. Specimen from Vamlingbo (d), somewhat compressed vertically; from 1. post, radius. 



BB invisible in side view; has 4 IIBr in some rays. X 2. 

 3&. Basal view of same. IBB resorbed. X 2. 

 40,6. Anterior and basal views of another specimen from same locality. IBB resorbed, and 



BB invisible from side. X 2. 

 5. Another specimen from same locality in similar condition. BB and RA confined to column 



facet. X 2. 

 ■ 6a. Very young specimen from same locality; 1. ant. radial view. 

 6b. Same view enlarged. X 2. 

 6c. Same; ornament on IIBr and IIIBr. X 3- 

 6d. Basal view of same, showing IBB not yet resorbed. X 2. 

 6e. Cross-section of base, constructed from foregoing figures; showing IBB (indicated by 



vertical hatching) in form of a plug entirely within the ring of BB. X S- 

 . 7. Another small specimen from same locality, showing more rotund form of crown in 



younger stage. 

 8, 90. Mature specimens from same locality, not compressed, showing normal outline. 

 gb. Base of ga, showing surface ornament. X 3- 

 ID. Specimen from same locality not compressed, with calyx narrower below. 



11. Compressed specimen from same locality with rather long IBr; from r. ant. interradius. 



X2. 



12. IIBr and IIIBr of crushed specimen, showing ornament and traces of parasites. X 3- 



Same locality. 



13. Fragment; IIBr and IIIBr, showing ornament, with imbricated margins not seen on other 



specimens ; same Iocalit5'. X 2. 

 140. Variety with straighter sides and longer brachials ; r. ant. view. X 2. Same locality. 

 14&. Right posterior view of same; radianal almost covered by the column. X 2. 

 I4r. Outline restoration of same. 

 150. Variety from Amundi, horizon (/), with more pyriform crown, and arms preserved; 



posterior view; mentioned by Angelin on p. 13, as /. pyriformis. X 2. Museum 



Geol. Survey of Sweden. 

 IS&. Anterior view of base ; has an extra plate in ant. ray. X 2. 

 iSc. Basal view of same, BB slightly visible beyond the column ; IBB resorbed. X 2 



(enlargement fraction omitted on plate). 

 16. Fragment of similar specimen from IIBri up, showing detail of arms to at least the sixth 



bifurcation, and coiling of the ultimate ray divisions. Note the great depth of the 



brachials dorso-ventrally. X 3- Same locality. 



Wenlock Gr. ; Silurian. Gotland, Sweden, unless otherwise stated. 



All the specimens except fig. 15 are in the Riks Museum, Stockholm.. 



Figs. 17. Ichthyocrinus devonicus n. sp 290 



Fig. lya. The type, anterior view; a compressed specimen, surface considerably worn, but with 

 faint traces of ornament in some places. BB entirely covered by the column. 

 Author's collection. 

 17&. Opposite view showing the arms to the last bifurcation. 

 17c. Outline restoration, showing contour of the specimen if undistorted. 

 Helderbergian ; Lower Devonian. Benton County, Tennessee. 



