54 MH. a. B. SHIPLEY ON GBPHYEBAN [Jan. 17, 



Plate II, 



Fig. 1. Villogorgia rubra, n. sp., p. 48. The colony, natural size. 



2. Villogorgia rubra. Some spicules, (a) of the operculum, (b) of the 



polyp, (c) of the coenenchyma. 



3. Villogorgia rubra. Three polyps, magnified, to show the operculum 



closed. 



4. Villogorgia rubra. Two rays of the operculum. 



Plate III. 



Fig. ]. Muricella flexilis, n. sp., p. 49. The colony, natural size. 



2. Muricella flexilis. Some spicules. 



3. Muricella ienera, p. 50. The colony, natural size. 



4. Muricella tenera. Some spicules. 



Plate IV. 



Fig. 1. Eu])lexati,ra antipathes, p. b\. 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 Arthur 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 place \ 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 

 undesci'ibed species is what might have been expected. 



Together with this collection came a small bottle labelled 

 " Queen Charlotte's Island, B.C., Eev. J. N. Keen." This contained 

 four specimens of a Sipunculid that I recognize as Physcosoma 

 japonicum Grube ". 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 discoveiy of it on the 

 American coast materially increases its range. 



^ Zoological Eesults etc. Willey, Cambridge, pt. ii. 1898, p. 151. 

 * Selenka, Die Sipunculiden, Wiesbaden, 1883, p. 76. 



