U.S. NATIONAL MUSEUM 



BULLETIN 272 PLATE 9 



Figures 1-18. — 1, Megasclere, Heteromeyenia baileyi, U'pe; 2, megasclere, H. repens; 

 3, longer gemmosclere, //. repens; 4, shorter gemmosclere, H. repens; 5, megasclere, H. 

 tubispsrma; 6, longer gemmosclere, H. tubisperma; 7, shorter gemmosclere, //. tubisperma; 

 8, longer gemmosclere, H. tentasperma; 9, shorter gemmosclere, H. tetitasperma; 10, 

 megasclere, H. stepanozvii; 11, gemmoscieres, H. stepanowii; 12, microsclere, H. stepanozvii; 

 13, gemmule, //. slepanowii, optical sect.; 14, enlarged gemmule porus tube, H. stepanozvii; 

 IS, microsclere, H. baileyi, type; 16, microsclere, H. repens; 17. microsclere, //. tubisperma; 

 18, microsclere, H. tentasperma. 



