. Text-fig. 46. Pyura squamata Hartmeyer (St. 187): A, part of test; B, oral tentacle; C, dorsal tubercle. Internal structure. Owing to the damaged condition of the specimen certain details of structure could not be seen. But the form of the tentacles (Text-fig. 46 B) and dorsal tubercle (Text-fig. 46 C), the arrangement of branchial bars, and the shape of the gonads all conform closely to Hartmeyer's description of the type specimen. The anus is divided into seven rounded lobes; in the type specimen the anus was destroyed. Remarks. This species is characterized principally by the polygonal pl
. Text-fig. 46. Pyura squamata Hartmeyer (St. 187): A, part of test; B, oral tentacle; C, dorsal tubercle. Internal structure. Owing to the damaged condition of the specimen certain details of structure could not be seen. But the form of the tentacles (Text-fig. 46 B) and dorsal tubercle (Text-fig. 46 C), the arrangement of branchial bars, and the shape of the gonads all conform closely to Hartmeyer's description of the type specimen. The anus is divided into seven rounded lobes; in the type specimen the anus was destroyed. Remarks. This species is characterized principally by the polygonal plates of the test, and the presence of only five well-developed branchial folds, with a rudimentary 6th fold. In spite of the damaged state of the only specimen in the ' Discovery' collection I have no hesitation in assigning it to P. squamata. Distribution. Antarctic (Kaiser Wilhelm II Land, Charcot Land, Palmer Archipelago). Pyura legumen (Lesson) (Text-figs. 47 A, B, C; 48; PI. IV, fig. 6) Boltenia legumen Lesson, 1830, p. 149, pi. 53, fig. 1. For synonymy see van Name, 1945, p. 326. Occurrence. St. 52: Falkland Islands, 17 m. St. 53: Falkland Islands, 0-2 m. St. 55: Falkland Islands, 10-16 m. St. 56: Falkland Islands, 10-5-10 m. St. 57: Falkland Islands, 15 m. St. WS 71:
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Keywords: ., bookcentury1900, booksubjectocean, booksubjectscientificexpediti
