PLATE XXVI. 



FIG. 



1. LAOMEDEA DICHOTOMA, p. 102, of the natural size. 



2. A portion of the same magnified. 



3. CAMPANULARIA VERTICILLATA, p. 112, of the natural size. 



From a specimen furnished by Wm. Bean, Esq. 



4. A portion of the same magnified. 



