85 



Gonosome. Gonophores borne on the hydrorhiza or at the base of the stem, with 

 a short stalk, flattened globular in shape. 



Colour. Colourless. 



Locality. Between Misaki and Jogashinia, Saganii Sea; on Sargassum. 



Date. Gonothecae found in July. 



Species of the genus Halecium were described before (see Nr. 15, 16). Of these 

 the present species has the thickest stem, and the hydranths are also very large, although 

 Nr. 1(3 [H. flexile AUni.] has the gieatest height. One characteristic of this species is the pre- 

 sence of irregulär but distinct annular grooves below the hydrotheca. The hydrothecae 

 are, raoreover, never one above another in the sanie group; they are tubulär, but there 

 is a septum and only the terminal shallow cup is occupied by the hydranth. Allnian's 

 description would lead one to suppose the presence of a row of small spots on the external 

 face of the hydrotheca corresponding to the internal septum, but in this species they are 

 totally absent; Allnian's description has yet to be verified (see Inaba 1890 fig. 44 Halecium 

 flexile; — hier Fig. 48). 



Since only a few reproductive organs have been examined, a füll description cannot 

 be given. The female ones are broad above and narrow below. In the accompanying 

 figures the sexes are distinguished, but details of their structure have not been made out. 

 The figures simply reproduce what was seen." (Inaba 1892c.) 



Hnlecinin Beaiiii (Johnston 1838). 



Nr. 362 i Sammlung Doflein. 



Thoa Edw.irdsiana. d'Orbigny 1839 p. 25 tab. 12 fig. 6. 8. 

 Halecium Beanii. Hincks 1868 p. 224 tab. 43 Kg. 2. 



— — . Allman 1888 p. 12 tab. 12 tig. 3, 3 a. 

 — . Nutting 1901 b p. 358 tig. 53. 



— — . Bedot 1905 p. 78. 



— edwardsianum. Hartlaub 1905 p. 604 fig. Y», Zj. 



— Beanii. Jäderholm 1909 p. 60 tab. 5 fig. 8—9. 



— — . Broch 1909 a p. 203. 



— — . Bedot 1910 p. 304. 



— — . Bedot 1912 p. 296. 



Ein 40 mm hohes Stöckcheu, reichlich besetzt mit den charakteristisciien weiblichen 

 Gonotheken, mit europäischem Vergleichsmaterial völlig übereinstimmend. 



Geschlechtsreif gefunden im November. 



Fundort: Okinosebank, Sagamibai. Station 7. 10. November 1904. 



Diese Art scheint nahezu kosmopolitisch zu sein. Bisher gefunden (nach Jäder- 

 holm 1909): Nordsee, England, Frankreich, Schweden, Norwegen, Nördl. Eismeer, Spitz- 

 bergen, Island. Grönland. Mittelmeer, Azoren, Kap Verdische Inseln, Woods Hole, Burd- 

 wood-Bank, Patagonien, Süd-Australien; — ferner Chile (Jäderholm 1910). 



Für Japan neu. 



Tiefe: 70 — 180 m. 



