CYRTOPOEA. 
55 
Fig. 19, p. 54. Ihe upper part of a zoarium, with highly raised 
prominences, and a gonoecium ; x 8 dia. Maastrichter Kalk : 
Maastiicht, Van Breda Coll. D. 3327. 
Fig. 20 = Voi. I. Fig. 30, p. 286. — Fig. 21. — Ci/rtopora elegam\ x 18. 
Cyrtopora elegans ■, x 14. D. 3326. D. 3326. 
Fig. 20. Longitudinal section of part of a stem; X 14 dia. 
Maastrichter Kalk : Maastricht. Van Breda Coll. D. 3326. 
Fig. 21. Transverse section of stem of the same specimen; 
X 18 dia. Maastrichter Kalk: Maastricht. Van Breda Coll. 
D. 3326. 
Affinities. 
This species is the type of tlie genus. The stems are much 
thinner than in the Keocomian C. campicheana^ d’Orbigny. 
LIST OF SPECIMENS. 
D. 3326. A small fragment in tube and three thin sections on slides cut from 
the same. Maastrichter Kalk. Maastricht. Van Breda Coll. 
Figs. 20, 21. 
D. 3327. The end of a zoarium with especially thorny stem, owing to the height 
of the groups of apertures. Maastrichter Kalk. Maastricht. 
Van Breda Coll. Figd. p. 54, Fig. 19. 
D. 3333. A young zoarium. Maastrichter Kalk. Maastricht. Van Breda 
Coll. Figd. p. 54, Fig. 18. 
D. 3527. Four zoaria, one partly hollow. Maastrichter Kalk. Maastricht. 
Van Breda Coll. 
Ten zoaria, three of which show the base. Maastrichter Kalk. 
Maastricht. Van Breda Coll. 
D. 3481. 
