. Fig. 3. A. Amastigia benemunita (Busk). St. WS 82, Falkland Islands. Basal view of a narrow branch with large basal avicularium. The underlying zooecia are stippled, and the outlines of their basal walls omitted for clarity. Three mandibles are shown, one being open and very short. The fourth hetero- zooecium has an opesia, but no mandible. B. A. benemunita (Busk). Challenger St. 315. Young colony with ancestrula. 47. mdb. mandible, ops. opesia of heterozooecium, r. rootlets, sc. scutum. basal heterozooecia, which are larger, it has a chamber of variable shape. The mandible is arti
. Fig. 3. A. Amastigia benemunita (Busk). St. WS 82, Falkland Islands. Basal view of a narrow branch with large basal avicularium. The underlying zooecia are stippled, and the outlines of their basal walls omitted for clarity. Three mandibles are shown, one being open and very short. The fourth hetero- zooecium has an opesia, but no mandible. B. A. benemunita (Busk). Challenger St. 315. Young colony with ancestrula. 47. mdb. mandible, ops. opesia of heterozooecium, r. rootlets, sc. scutum. basal heterozooecia, which are larger, it has a chamber of variable shape. The mandible is articulated some distance from the distal end of the chamber and is directed straight backwards ( proximally along the branch). The distal prolongation of the chamber is often visible in frontal view as a small triangular cell in the angle of the bifurcation. Marginal avicularia, when present, are most commonly on the zooecia bordering the axil.
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Keywords: ., bookcentury1900, booksubjectocean, booksubjectscientificexpediti
