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Show 54 MR, A. E. SHIPLEY ON GEPHYREAN [Jan. 17, PLATE II. Fig. 1. Villoyoryia rubra, n. sp., p. 48. The colony, natural size. 2. Villoyoryia rubra. Some spicules, (a) of the operculum, (b) of the polyp, (c) of the ccenenchyma. 3. Villoyoryia rubra. Three polyps, magnified, to show the operculum closed. 4. Villoyoryia rubra. Two rays of the operculum. PLATE III. Fig. 1. Muricella flexilis, n. sp., p. 49. The colony, natural size. 2. Muricella flexilis. Some spicules. 3. Muricella tenera, p. 50. The colony, natural size. 4. Muricella tenera. Some spicules. PLATE IV. Fig. 1. Euplexaura antipathes, p. 51. The lower part of the colony, X 1, to show the stony basal enlargement. 2. Euplexaura antipathes. A small portion of a microscopical section of the basal part, decalcified, showing the horny matrix. 4. Notes on a Collection of Gephyrean Worms formed at Christmas Island (Indian Ocean) by Mr. C. W . Andrews. By A R T H U R E. SHIPLEY, Fellow and Tutor of Christ's College, Cambridge, and University Lecturer in the Advanced Morphology of the Invertebrata. [Received December 3,1898.] The small collection of Gephyrea gathered by Mr. C. W. Andrews at Christmas Island (Indian Ocean), which, owing to the kindness of Professor F. Jeffrey Bell, I have been able to examine, contains one species of Echiurid and five of Sipunculid worms. No species is new, but, as I have pointed out in another place1, the part of the world whence this collection comes has been carefully searched for Gephyrea, and the two chief authorities on the Sipuuculoidea treat of specimens from this region of the earth ; so that an absence of undescribed species is what might have been expected. Together with this collection came a small bottle labelled " Queen Charlotte's Island, B.C., Rev. J. N. Keen." This contained four specimens of a Sipunculid that I recognize as Physcosoma japonicum Grube 2. This species has hitherto been known from Northern Japan, Hakodate, Enosima, and from the coast of Australia. It has not hitherto, so far as I know, been found on the east side of the Pacific, and Mr. Keen's discovery of it on the American coast materially increases its range. 1 Zoological Results etc. Willey, Cambridge, pt. ii. 1898, p. 151. 2 Selenka, Die Sipunculiden, 'Wiesbaden, 1883, p. 76. |
