[warrHEw] HYOLITHES GRACILIS FROM ST. JOHN GROUP 
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EXPLANATION OF FIGURES. 
1. Hyolithes gracilis. Mag. 2, adult—b, Part of visceral area—c, Brachial 
area—d, Young example, proximal part wanting—e, Operculum, inside. Mag, 4, 
2. Hyolithes gracilior. Restored. Mag. 3, —a@, Dorsal view—b, Side view. 
3. Hyolithes gracillimus. Mag. 2, —a, Supposed larval tube—b, Visceral area 
of the tube of habitation of another individual—c, Brachial area of same—d, 
Section of the tube near the orifice. 
