. Cradd Som Text-fig. 49. Sulculeolaria biloba. Three anterior nectophores taken by Plymouth in Celtic Sea, July 1937. x 4-4- seven anterior nectophores that I selected represented G. biloba Sars, though they were in poor condition. The somatocysts were not easily visible, but I think that I could just detect in each the characteristic arrangement of the somatocyst and the ' basal pit' for the proximal end of the stem, such as I have described. These seven anterior and seven posterior selected nectophores could hardly represent any other species known to me. 'Discovery II' took specimen
. Cradd Som Text-fig. 49. Sulculeolaria biloba. Three anterior nectophores taken by Plymouth in Celtic Sea, July 1937. x 4-4- seven anterior nectophores that I selected represented G. biloba Sars, though they were in poor condition. The somatocysts were not easily visible, but I think that I could just detect in each the characteristic arrangement of the somatocyst and the ' basal pit' for the proximal end of the stem, such as I have described. These seven anterior and seven posterior selected nectophores could hardly represent any other species known to me. 'Discovery II' took specimens at Stations 1567 and 1568 as reported above (p. 102) and very recently thirteen anterior and nineteen posterior nectophores were sorted out from a surface-haul from 'Discovery II' Station 2688 on the '90° E.' line of stations in lat. 200 19' S. The average length of the nectosac of these anterior nectophores is 8-8 mm. I am quite satisfied therefore that the Atlantic species Sulculeolaria biloba occurs in the Indian as well as the Pacific Ocean. It is possible that the North Atlantic specimens reach a greater size than the tropical Indian, but we have not sufficient data yet to be able to judge. 14
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