. Discovery reports. Discovery (Ship); Scientific expeditions. 144 DISCOVERY REPORTS Family ARICIIDAE, Savigny Genus Aricia, Savigny Aricia marginata, Ehlers. Ehlers, 1897, p. 95, pi. vi, figs. 150-156. Benham, 1921, p. 77. Nainereis marginata, Fauvel, 1916, p. 445, pi. viii, figs. 26-33, ^^''^^ synonymy. St. 45. 6. iv. 26. 2-7 miles S 85° E of Jason Light, South Georgia. 238-270 m. Gear OTL. Bottom: grey mud. Seventy specimens. St. 141. 29. xii. 26. East Cumberland Bay, South Georgia. 200 yards from shore, under Mount Duse. 17-27 m. Gear BTS. Bottom: mud. Fourteen specimens. St. 144. 5. i. 27
. Discovery reports. Discovery (Ship); Scientific expeditions. 144 DISCOVERY REPORTS Family ARICIIDAE, Savigny Genus Aricia, Savigny Aricia marginata, Ehlers. Ehlers, 1897, p. 95, pi. vi, figs. 150-156. Benham, 1921, p. 77. Nainereis marginata, Fauvel, 1916, p. 445, pi. viii, figs. 26-33, ^^''^^ synonymy. St. 45. 6. iv. 26. 2-7 miles S 85° E of Jason Light, South Georgia. 238-270 m. Gear OTL. Bottom: grey mud. Seventy specimens. St. 141. 29. xii. 26. East Cumberland Bay, South Georgia. 200 yards from shore, under Mount Duse. 17-27 m. Gear BTS. Bottom: mud. Fourteen specimens. St. 144. 5. i. 27. Off mouth of Stromness Harbour, South Georgia. From 54° 04' S, 36° 27' W to 53° 58' S, 36° 26' W. 155-178 m. Gear N 4-T. Bottom: green mud and sand. One specimen. St. WS25. 17. xii. 26. Undine Harbour (North), South Georgia. 18-27 m. Gear BTS. Bottom: mud and sand. Nine specimens. St. WS 62. 19. i. 27. Wilson Harbour, South Georgia. 26-83 m. Gear BTS. Five specimens. St. MS .'' 24 or 25. 13. iv. 25. East Cumberland Bay, South Georgia. (No further information.) Fourteen specimens. Remarks. I have examined a large series of examples of this species, which is common off South Georgia. The number of thoracic chaetigers varies between 11 and 14, but the greater part have 13 thoracic chaetigers. The appearance of the gills on the 6th chaetiger is an almost constant character: in one specimen examined they begin on the 9th chaetiger. The three rows of spines in the ventral rami of the thoracic feet are also constant in my specimens. I find no capillary bristles in the ventral thoracic rami. Forked bristles are present in the abdominal region. Aricia ohlini, Ehlers, with its 19 or 20 thoracic segments, is a very closely allied species. Aricia michaelseni, Ehlers. Ehlers, 1897, p. 88, pi. vi, figs. 136-140. St. 56 ?. 16. V. 26. Sparrow Cove, Port William, East Falkland Island. I m. Gear RM. One specimen. Remarks. A single specimen measuring 65 mm. by 2 mm. and incomplete posterio
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