. mm Text-fig. 13. Leptoclinides diemenensis Michaelsen (St. 935): A, zooid; B, spicule. to conical, and muscular, with six shallow pointed lobes. The base of the atrial siphon () is at or slightly posterior to the middle of the branchial sac. The siphon varies in length in different zooids, but often is longer than the oral siphon. It is frequently, but not always, backwardly directed. Five or six slender longitudinal muscles pass along each side of the thorax. Near the posterior end of the thorax there is a conspicuous lateral thoracic organ () on each side. The mass of spicule
. mm Text-fig. 13. Leptoclinides diemenensis Michaelsen (St. 935): A, zooid; B, spicule. to conical, and muscular, with six shallow pointed lobes. The base of the atrial siphon () is at or slightly posterior to the middle of the branchial sac. The siphon varies in length in different zooids, but often is longer than the oral siphon. It is frequently, but not always, backwardly directed. Five or six slender longitudinal muscles pass along each side of the thorax. Near the posterior end of the thorax there is a conspicuous lateral thoracic organ () on each side. The mass of spicules occupying the cavity of the organ is about 125 ju in diameter. Branchial sac. There are twelve to fourteen long narrow stigmata in each of the four rows. The dorsal languets are short, triangular, and blunt.
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Photo credit: © The Bookworm Collection / Alamy / Afripics
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Keywords: ., bookcentury1900, booksubjectocean, booksubjectscientificexpediti
