22 
GUIDE TO THE COKAL GALLERY. 
High Cases 
I.-VL and 
Table Cases' 
1 and 2 a, b, 
Fig. 3. 
a. Ilcilicliondria panicea. Vertical section X 100. Partly diagrammatic. 
a, oscule ; b, pores ; c, whip chambers, b. Dermal membrane or skin with 
pores X 100. c. Whip chamber X 1,600 (after Yosmaer). d. Skeleton 
spicule X 100. 
