p. 2

Halysites catenularia Linn.

Catenipora escharoides, Lamarck; Hall,
Pal. of N.Y. Vol. 2 p. 127 pl. 35 fig. 1; Say, Am Jour
Sc. Vol 2 p 34 (Hall Wis Geol. 1p 66 fig 2 & p 430

Coral in hemispheric masses,
composed of oval tubes placed laterally
in juxtaposition in a single series, or
separated by a cellular interspace; lines
of tubes arranged in reticulated form,
with unequal interspaces; tubes with
longitudinally, externally transversely
striated, and sometimes with more
elevated ridges at equal intervals.

D. (of tubes) 0.07

Wauwatosa!