U. S. F. C. BULLETIN 1900. VAUGHAN. 
PLATE XXII. 
FIG. 1. ISOPORA MURICATA FORMA PROLIFERA LAM. END OF A BRANCH, HEIGHT 9 CM. 
FIG. 2. ISOPORA MURICATA (LINN.) HEIGHT 20.5 CM. 
HELIOTYPE PRINTING CO.. BOSTON. 
