OSCrLIPORA. 
63 
Fig 22, p. 61. A zoarium with a wide, flat base and a short, 
thick stem, and unusually long, narrow series of apertures. There 
is a radial series of undeveloped branches opposite the developed 
branch ; X 7 dia. ^laastrichter Kalk : Maastricht. Yan Breda 
Coll. D. 3373. 
I’ig. 23, p. 61. A thin longitudinal section along a stem with 
the cross - section of a lateral fascicle ; X 8 dia. Maastrichter 
Kalk: Maastricht. Yan Breda Coll. D. 11,802. 
Affimties. 
This species differs from 0. truncata (Goldf.), as the zoarium is 
subadnate and rarely branched, and as the peristomal fascicles occur 
as transverse ridges and not as cylindrical processes. 
D. 1386. 
D. 3373. 
D. 3367. 
D. 11,802, 
D. 682. 
D. 944. 
D. 1387. 
D. 3368. 
D. 3376. 
D. 3391. 
D. 3471. 
D. 3509. 
D. 3524. 
D. 3762. 
D. 5138. 
D. 5139. 
LIST OF SPECIMENS. 
Four zoaria (on slide). Maastrichter Kalk. Maastricht. Vine Coll. 
Two of the specimens are figured on PI. YI. Figs. 2 and 3. 
Purchased of Executors of Gr. R. Vine, October 28, 1893. 
A zoarium with flat base and one short, thick branch. Maastrichter 
Kalk. Maastricht. Van Breda Coll. Figd. p. 61, Fig. 22. 
More than 100 specimens. Maastrichter Kalk. Maastricht. Yan 
Breda Coll. 
Section on a slide cut from one specimen of the preceding lot. Figd. 
p. 61, Fig. 23. 
Two specimens (on slide). Maastrichter Kalk. Maastricht. G. R. 
Vine Coll. 
A Avorn specimen (on slide), labelled by Vine Truncatula Jilix. 
Maastrichter Kalk. Maastricht. G. R. Vine Coll. 
A specimen (on slide). Maastrichter Kalk. Maastricht. Purchased 
of Executors of G. R. Vine, October 28, 1893. 
A thick massive zoarium Avith base (on slide). Maastrichter Kalk. 
Maastricht. Yan Breda Coll. 
Nine zoaria. Maastrichter Kalk. Maastricht. Yan Breda Coll. 
A zoarium shoAving reA^erse face and immersed gonoecium. Maas- 
trichter Kalk. Maastricht. Yan Breda Coll. 
A zoarium AA'ith Avorn fasciculi (on slide). Maastrichter Kalk. 
Maastricht. Van Breda Coll. 
A zoarium (on slide). Maastrichter Kalk. Maastricht. Yan 
Breda Coll. 
Two AVorn zoaria, one of which has several gonoecia. Maastrichter 
Kalk. Maastricht. Yan Breda Coll. 
A AAwn zoarium (on slide). Maastrichter Kalk. Maastricht. 
Gamble Coll. 
A zoarium Avith broad, discoid base (on slide), from one specimen. 
Maastrichter Kalk. Maastricht. Yan Breda Coll. 
Fourteen zoaria. Maastrichter Kalk. Maastricht. ’N an Breda Coll. 
