38 SMITHSONIAN INSTITUTION 



PLATE XVI 

 (All figures natural size except where otherwise stated) 



PAGE 



Figs. 1-15. Temnocrinus tuberculatus (Miller) 209 



Fig. I. The type: copied from Miller, Plate opp. p. 88, fig. i. Enlarged. 



2. Posterior view of large, flattened specimen. Shows plates of anal area suturally united to 



adjacent rays; also the characteristic surface ornamentation, and extra plate (RA) 



in r. post. ray. 

 3a. Another large specimen, but little compressed. Note the linear arrangement of tubercles 



on anal and iBr plates, and on upper Br, in this and the last specimen. 

 36. IBrz and succeeding IIBr of same specimen enlarged, to show character of ornament and 



projecting nodes at the sides. X 2. 

 31:. A series of IIIBr and IVBr of same, showing the tubercles becoming confluent, forming 



vertical parallel ridges. X 2. 



4. Specimen with large part of stem preserved, showing the tapering upper part with thin 



ossicles. Right posterior view of crown, showing RA in form of radial in median 

 line of r. post, ray and connecting with radial to the right. 



5. Left posterior view of small specimen, with finely plated perisome coming down from the 



tegmen between the rays, and connecting with iBr plates in lower part of areas. The 

 anal structures, and full length of the arms coiled over the tegmen, are well shown. 

 X2. 



6. Another specimen, posterior view, with perisome well preserved in anal interradius, and 



showing full size of radianal. Has a compound plate in 1. post. ray. 



7. Unflattened specimen, showing natural contour of crown ; from r. ant interradius. 

 8,9,10,11,12. Specimens more or less flattened, in different positions, showing radianal and 



various other characters of the species ; fig. 12 is drawn with anal side to left. 

 13, 14. R. ant. and anterior views of well preserved specimens, the latter showing the coiled 



distal ends of the arm branches. 

 IS- Mature specimen, in which the lateral nodes on brachials become very prominent ; winged 



buttresses at lateral margins of rays ; anterior view. British Museum. 



Wenlock Gr. ; Silurian. Dudley, England. 



All the specimens are in the author's collection unless otherwise stated. 



