Abstract
A STUDY of the development of the rhynchonellid, Tegulorhynchia nigricans, Sowerby, shows the larva to be furnished with two pairs of large tufts of long setæ set on the hind margin of the mantle rudiment. The members of one pair lie dorso-laterally, those of the other pair laterally. On the mid-ventral surface of the larval mantle is a longitudinal thickening of ciliated cells some 70 µ long and reaching to the hind edge. Two bands of muscle fibres pass forward inside the larval pedicle and are finally inserted one each side of the mid-dorsal line of the base of the mantle.
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References
Percival, Trans. Roy. Soc., New Zealand, 74, 1 (1944).
Yatsu, J. Coll Sci. Imp. Univ., Tokyo, 17, 1 (1901–3).
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PERCIVAL, E. Orientation of Telotrematous Brachiopoda. Nature 171, 436 (1953). https://doi.org/10.1038/171436a0
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DOI: https://doi.org/10.1038/171436a0
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