40 SMITHSONIAN INSTITUTION 



PLATE XVII 

 (All figures natural size except where otherwise stated) 



PAGE 



Figs. 1-3. Meristocrinus interbrachiatus (Angelin) 212 



Figs. ia,b,c. The type; original of Angelin, pi. 23, fig. 2q, and pi. 29, fig. 78. Right anterior, right ' 



posterior, and posterior views; the specimen is abnormal from injury and reparation. 



X |. Faro (d). 



id. Perisome from interradius opposite lower IIBr. X 3- 

 2a. A normal, somewhat flattened specimen from Wisby (/) . Right anterior radial view, 



showing R + 3 IBr in the regular rays. 

 2b, c. Right posterior and posterior views of lower part of same; showing RA in form and 



position of a radial, the anal plate suturallj^ connected, and the series following it. 



The r. post, ray has 4 IBr. 

 2d. Perisome opposite IIBr i and 2. X 3- 



3a, b. Left anterior and posterior views of abnormal specimen from Faro. 

 3C. Perisome opposite IBr 2 and 3. X 3- 

 3d. Perisome in third axil. X 3- 



Wenlock Gr. ; Silurian. Gotland, Sweden. 



All the specimens are in the Riks Museum, Stockholm. 



Figs. 4, 5. ( ?) Meristocrinus anceps n. sp 214 



Fig. 40. Broken specimen from Wisby (d), with pentagonal RA, and anal plates passing quickly 

 into perisome. X 2. 

 4&. Restoration of same. X 2. 



5. Base of another specimen, posterior view. X 2. 

 Wenlock Gr. ; Silurian. Gotland, Sweden. 



Specimens in the Riks Museum, Stockholm. 



Fig. 6. (?) Meristocrinus tuberosus n. sp. . . : 214 



Fig. 6. A crushed specimen with rhombic RA, anal plate suturally connected, and large anal tube 

 probably free beyond that. Probably a variant of GnoriOTOcnnM.?. X-!!. Riks Museum. 

 Wenlock Gr. ; Silurian. Wisby (d). Gotland, Sweden. 



Fig. 7. Meristocrinus orbignyi (M'Coy) 213 



Fig. 7. Copy of the type figure, which is somewhat restored, being made from a wax impression 

 from a natural mould. Sedgwick Museum, Cambridge, England. 

 Upper Ludlow; Silurian. High Thorne, Kendal, Westmoreland County, England. 



Figs. 8, 9. Meristocrinus minor n. sp 213 



Fig. 8. Distorted specimen, showing 3 IBr; anterior view. British Museum, No. 6721. 



9. Posterior view of another injured specimen found associated with last; showing RA, and 

 faint indication of anal plates buried in the interradius. Author's collection. 

 Wenlock shales ; Silurian. Dudley, England. 



