JAPANESE CIIEILOSTOMATOUS BRYOZOA. 



427 



verse lines) dorsal surface. The bottom of each zocecial cell shows a 

 small inward projection of conical shape ; from its tip springs a peculiar 

 fan-shaped muscle, about half as long as the cell or longer and insert- 

 ing on the lateral and dorsal walls of the cell. The above conical 

 projection is more strongly developed in the lower parts of branches than 

 in the upper. Polypids with 27 or 29 tentacles. Avicularia very large, 

 of a somewhat rhomboidal outline in lateral view ; mandible acute, 

 beak slightly arched and pointed at end ; attached to zocecium at the 

 " step " with the narrowed and pointed base. Ocecia conspicuous, 

 rounded, smooth, hood-like, with crescent-shaped aperture. 



A few complete colonies of this new species exist in the collection. 

 Localities : Okinosé, 80 fins. ; Dôketsuba, i5ofms. ; off Cape Sunosaki, 120 

 fms. This species closely resembles Kinetoskias cyathus Wyv. Thom- 

 son, but distinctly differs from it, not only in the much longer size of 

 avicularia, but also in the total absence of the spiny process at the 

 upper outer angle of zocecium. 



Beania Johnston 1838. 



26. Beania hexaeertis (Ortmann). 



Diachoseries hexaceras, Ortmann 1S90, Jap. Bry., 26, pi. 1, fig. 30. 



Numerous specimens examined, growing on seaweed. Localities : 

 shallow water along the Misaki coast ; Hamajima in the Miye prefec- 

 ture. In all the specimens, many zocecia are provided with a spine at 

 the summit of zocecial aperture, a fact of which no mention was made 

 by Ortmann for the specimens he had from the Sagami Sea. 



27. Beania magellanica (Busk). 



Diachoris magellanica. Busk 1852, Cat. Brit. Mar. Poly., pt. I, 54.— Busk. 1884. 

 Chall. Rep., vol. X, pt. XXX. 59.— Hincks 1SS5, Ann. Mag. Nat. Hist., 5, XV, 246, 

 pi viii, fig. 2— McCoy 18S0, Prod. Zool. Vict., decade V, 32, pi. xlvi, fig. 2. 



Beania magellanica, MacGillivray 1887, Cat. Mar. Poly. Vict., 17.— Waters 1897, 

 Journ. Linn. Soc, vol. XXVI, 16, pi. ii, figs. 11-14. — Hutton 1904, Ind. Faun. Novse- 

 Zeland, 295. 



