231 



EXPLANATION OF PLATE 16 

 Figure Page 



100. Macoina constricta (Bruguiere) 82 



100 A. Macoma brevifrons (Say) 82 



101. Tellidora cristata (Recluz) 83 



102. Semele bellastriata (Conrad) 84 



103. Semele proflcua (Pulteney) 84 



104. Semele purpurascens (Gmelin) 84 



105. Semele nuculoides (Conrad) 84 



