SMITHSONIAN MISCELLANEOUS COLLECTIONS 



VOL. 144. NO. 3. PLATE 21 



1-4. HARDOUINIA MORTONIS (MlCHELIN); 5. HARDOUINIA 

 PORRECTUS (CLARK); 6-10, HARDOUINIA HEMISPHERICA (SUOCUM) 



(SEE EXPLANATION OF PLATES AT END OF TEXT.) 



