U.S. NATIONAL MUSEUM 



BULLETIN 272 PLATE 10 



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12 



7 



13 



14 



15 



Figures 1-15. — 1, Megasclei-e, Afiheteromeyenia ryderi; 2, malformed longer gemmosclere, 

 A. ryderi; 3, longer gemmosclere, A. ryderi; 4, shorter gemmosclere, J. ryderi; 5, mega- 

 sclere, J. pictovensis; 6, longer gemmosclere, A. pictovensis; 7, shorter gemmosclere, 

 J. pictovensis; 8, megasclere, A. argyrosperma; 9, longer gemmosclere, A. argyrosperma; 

 10, shorter gemmosclere, A. argyrosperma; 11, longer gemmosclere, A. biceps; 12, shorter 

 gemmosclere, A. biceps; 13, longer gemmosclere, Heteromeyenia conigera; 14, shorter 

 gemmosclere, H. conigera; 15, malformed shorter gemmosclere, H. co7iigera. 



