. Discovery reports. Discovery (Ship); Scientific expeditions; Ocean; Antarctica; Falkland Islands. 20/i. Text-fig. 53. Bathypera splendens Michaelsen (St. 181): A, spicule from test; B, dorsal tubercle. Family MOLGULIDAE Lacaze-Duthiers, 1877 Genus Molgula Forbes & Hartley, 1848 Molgula pedunculata Herdman (Text-fig. 54; PI. V, fig. 4) Molgula pedunculata Herdman, 1881, p. 234. For synonymy see van Name (1945). Occurrence. St. 27: S. Georgia, nom. St. 39: S. Georgia, 179-235111. St. 42: S. Georgia, 120-204 m. St. 45: S. Georgia, 238-270111. St. 123: S. Georgia, 230-250111. St. 140: S. Geo
. Discovery reports. Discovery (Ship); Scientific expeditions; Ocean; Antarctica; Falkland Islands. 20/i. Text-fig. 53. Bathypera splendens Michaelsen (St. 181): A, spicule from test; B, dorsal tubercle. Family MOLGULIDAE Lacaze-Duthiers, 1877 Genus Molgula Forbes & Hartley, 1848 Molgula pedunculata Herdman (Text-fig. 54; PI. V, fig. 4) Molgula pedunculata Herdman, 1881, p. 234. For synonymy see van Name (1945). Occurrence. St. 27: S. Georgia, nom. St. 39: S. Georgia, 179-235111. St. 42: S. Georgia, 120-204 m. St. 45: S. Georgia, 238-270111. St. 123: S. Georgia, 230-250111. St. 140: S. Georgia, 122-136 m. St. 144: S. Georgia, 155-178 m. St. 160: Shag Rocks, 177 m. St. 190: Palmer Archi- pelago, 93-126 m. St. 599: Graham Land, 203 m. St. WS27: S. Georgia, 107 m. St. MS 68: S. Georgia, 220-247 m- External appearance. The largest of the many specimens in the collection is 2-6 cm. long. Almost all of them show some degree of the development of tag-like processes or short hairs on the test. The body is longer than wide, and is generally ovoid or somewhat rectangular, with the siphons sym- metrically placed on the upper border. In some specimens, more often the small ones, the lower part of the body is produced into a narrow stalk, which is occasionally almost as long as the body, but is generally much shorter. Internal structure. The variation in the internal structure of the ' Discovery' specimens will be discussed in relation to Arnback's (1938) account of her species M. angulata, to which, in her prelimi- nary notes, she assigned a number of specimens in the 'Discovery' collection. Table 35 gives the main characters of M. angulata, and of the ' Discovery' specimens which I identify as M. pedunculata. Table 35 Tentacles Dorsal tubercle Branchial sac Gut M. angulata At least 20; the largest bipinnate Transversely elongated; horns inturned; faces back left 7 folds; about 11 bars per fold; i or 2 bars between folds Sharp bend in intestine M. pedunculata ('Discovery' s
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