. Bulletin - United States National Museum. Science. BRYOZOA OF THE PHILIPPINE REGION 119 is rarely bilamellar; more often it is subcylindrical, hollow, encrusting probably some small alga, and multilamellar. The ovicell is hyper- stomial, convex, deeply embedded in the distal zooecium; its orifice can not be closed by the operculum. There is never an ectocyst. This appears in the interior of the zooecium and is visible by the frontal pore which appears thus closed by a thin membrane. The operculum is feebly chitinized and is not clearly separated from the compensatrix; its form resembles a gr
. Bulletin - United States National Museum. Science. BRYOZOA OF THE PHILIPPINE REGION 119 is rarely bilamellar; more often it is subcylindrical, hollow, encrusting probably some small alga, and multilamellar. The ovicell is hyper- stomial, convex, deeply embedded in the distal zooecium; its orifice can not be closed by the operculum. There is never an ectocyst. This appears in the interior of the zooecium and is visible by the frontal pore which appears thus closed by a thin membrane. The operculum is feebly chitinized and is not clearly separated from the compensatrix; its form resembles a great deal that in the Petraliidae. The structure of the frontal is very different from that of the species covered by the ectocyst and we can not conceive that the frontal results from the union of the spines or of the spicules. The marginal pores have the aspect of those in the Adeonidae but they are not special to each zooecium and there is only a single range between two adjacent zooecia; they appear to be really parietal. 0. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States National Museum; Smithsonian Institution; United States. Dept. of the Interior. Washington : Smithsonian Institution Press, [etc. ]; for sale by the Supt. of Docs. , U. S. Govt Print. Off.
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