. Text-fig. 50. Sulculeolaria biloba. Basal parts of anterior nectophores taken by Plymouth in Celtic Sea, July 1937. A, dorsal view; B, D, lateral views; C, ventral view, x 8. The ventral side of these lateral radial canal-loops always springs from the pedicular canal-junction (Text-fig. 50 C) of all four radial canals, and never from the ring canal as described by Bigelow & Sears for a Mediterranean species (? S. turgida) which they called Galetta australis (1937, fig. 26A). It is not easy to see this junction in a lateral view. One side (left) of the base of the posterior nectoph

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. Text-fig. 50. Sulculeolaria biloba. Basal parts of anterior nectophores taken by Plymouth in Celtic Sea, July 1937. A, dorsal view; B, D, lateral views; C, ventral view, x 8. The ventral side of these lateral radial canal-loops always springs from the pedicular canal-junction (Text-fig. 50 C) of all four radial canals, and never from the ring canal as described by Bigelow & Sears for a Mediterranean species (? S. turgida) which they called Galetta australis (1937, fig. 26A). It is not easy to see this junction in a lateral view. One side (left) of the base of the posterior nectophore is higher than the other (Text-fig. 51B). In consequence the cavity round the central boss of the base of the anterior nectophore is asymmetrical, as can be seen in my Text-fig. 50 C. The width of the base

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Keywords: ., bookcentury1900, booksubjectocean, booksubjectscientificexpediti