U. S. NATIONAL MUSEUM 



BULLETIN 93 PL. 59 



^*+* ^^ * f 



Zfy* ^^v^. ^-SS'-' ' 



5 , 



JV 



^p^ 





6b 



1-5e, TETRACLITA SQUAMOSA STALACTIFERA; 6-6e, T. s. STALACTIFERA FORM 



FLORIDANA- 



FOR EXPLANATION OF FIGURES SEE PAGE 354. 



