GLOSSARY 329 



Page 



Spheroidal, somewhat like a sphere 283 



Striae, fine parallel lines or furrows 144 



Suture, the angular meeting line of two whorls. 1 19 



Tentacles, the two teelers of a mollusk 125 



Umbilicus, the hole round which the whorls ot 



a univalve shell revolve 1 19 



Umbo, the beak of a bivalve shell 22 



Univalve, a mollusk with one shell 118 



\\\riety, a subdivision ot a species 283 



^'ARIX, a periodically formed ridge or variation. 191 



Ventricose, swollen, well developed 97 



Wampum, shell-money, used by the Indians. . . 126 

 Whorl, one complete turn around a shell 1 19 



