p. 1

Heliolites pyriformis? Ehrenberg; Hall
Pal. of N.Y. Vol 2 p 133 pl 36A fig 1.

Cells tubular; rays short, trans-
versely septate, septa more or less inter-
rupted; interstices with tubular
openings upon the surface; vertical
sections distinct from H. spinipora; tubular
cells larger & often more widely separated
from each other.

Wauwatosa!