. Discovery reports. Discovery (Ship); Scientific expeditions; Ocean; Antarctica; Falkland Islands. 33i PATTERN OF BUDDING (i) Reduced group. In cormidia III-VII prominent gastrozooids are found at the oral end of the cormidia, associated each with a characteristic, but atypical gonodendron (PI. XII, fig. 4). In cormidia I and II on the other hand, each equally noticeable gastrozooid is linked both with a gonodendron and with a tentacle (PI. XIII, figs. 3, 4), and lies on the aboral side of the tentacle. Thus in cormidia I and II the reduced group is missing and the first one is tripartite lik
. Discovery reports. Discovery (Ship); Scientific expeditions; Ocean; Antarctica; Falkland Islands. 33i PATTERN OF BUDDING (i) Reduced group. In cormidia III-VII prominent gastrozooids are found at the oral end of the cormidia, associated each with a characteristic, but atypical gonodendron (PI. XII, fig. 4). In cormidia I and II on the other hand, each equally noticeable gastrozooid is linked both with a gonodendron and with a tentacle (PI. XIII, figs. 3, 4), and lies on the aboral side of the tentacle. Thus in cormidia I and II the reduced group is missing and the first one is tripartite like all the other com- ponents of the cormidia (Text-fig. 13), whereas in cormidia III-VII the tripartite pattern of the first. TENTACLES 1 1 GASTROZOOIDS PHHimi GONODENDRA 3 Text-fig. 13. Physalia physalis. Base of cormidium II (main zone) of a right-handed specimen, float-length 5 cm., from St. 403, to show the tripartite nature of the first three groups. In cormidium II, all the groups including group 1 are tri- partite. xii-5. group has been lost by the non-development of its tentacle. This pattern can generally be recognized even in old specimens when viewing them from the windward side. All seven cormidia open separ- ately into the pericystic space. Both the gastrozooid and the gonodendron of the first groups (group 1) of cormidia III-VII appear to retain separate openings into the common atrium, or enlarged and subdivided base of each cormidium (Text-fig. 12B). But if early stages of their development are examined (Text-fig. 14 a) it can be seen that the gonodendron is budded from the base of the gastro- zooid as usual. It is only because of the subsequent broadening of its base and incorporation into the. 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 Institute of Oceanographic Sciences (Great Britain
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