66 



latter with six or seveii rings directly beneath the hydrotheca as well as at the base; hydro- 

 theca deep bell-shaped, mouth slightly expanding and polygonal, with some dozen angles. 



Gonosome. Gonotheca on hydrorhiza, elongated bowl-shaped, the upper part broad 

 and the lower part narrow, upper end cut straight; medusa spherical, with 4 radial canals 

 and 4 tentacles. 



Colour. Transparent. 



Locality. „Boneri", Bishamon Cove, Saganii Sea; on smaller branches of Sargassum. 



Date. Gonothecae found in January. 



This species is fairly luxuriant, but as it is very sniall, it is difticult to recognize 

 it out of water. The mouth of the hydrotheca is distinctly polygonal when viewed from 

 above, but in profile it is easily mistaken for being circular. A somewhat more careful 

 examination soon shows that from each angle there runs down a delicate edge. The 

 shape of the medusae can not be described, as I have observed only those l3'ing in the 

 gonotheca. According to Hincks, the medusa of the genus Clytia has a nearly spherical 

 umbrella when ready for detachment, with a short manubrium having 4 lobes at the end, 

 4 radial canals and 4 tentacles on the umbrella margin, the tentacles with swollen bases 

 but no ocellus, lithocysts 8 in number, two in each interradius on the free margin of the 

 umbrella. I could not observe the four lobes of the manubrium in my specimens, 

 probably owing to their young condition; on other points they agree well with the de- 

 scription of Clytia, hence there is scarcely any doubt of their belonging to it. Four 

 egg-sacs can be seen attached to the radial canals.' (Inaba 1890.) 



Clytia linearis (Tbornely 1900). 



(Fig. 22—24.) 



Nr. 1707 c Sammlung Doflein. 



Nr. 14. Clytia sp. ? Inaba 1890 fig. 36—38. 



Obelia linearis Thornely 1900 p. 453 tab. 44 fig. 6. 



Campanularia linearis. Borradaile 1905 p. 839. 



Einige kleine, bis 6 mm hohe, sterile Stöckchen auf Agiaophenia Suensonii wachsend. 

 Mit der Beschreibung Inabas sehr gut übereinstimmend. Thornelys Beschreibung ist außer- 

 ordentlich kurz; doch handelt es sich auch dort zweifellos um 

 dieselbe Art. Die Medusenknospen dieser Form, die Inaba be- 

 schreibt, weisen wegen der Vierzahl ihrer Tentakel auf Clytia; 

 die Verzweigungsart, jedes Glied des Stammes aus der. Mitte des 

 Fig. 22. vorhergehenden seitlich hervorwachsend, dagegen mehr auf Gono- 



Clytia linearis (Tb.). thyraea. Die Längsstreifen der Theken laufen hier nicht auf die 

 ' ' "' ■ Vertiefungen zwischen den Zähnen, sondern auf die Zähne selbst aus. 

 Fundort: Aburatsubo, Sagamibai. 6. Oktober 1904. — Inabas Material: Shishigahana, 

 Sagamibai. 



Bisher gefunden in der Blanche Bai, Neu-Britannien (Thornely 1900), Suvadiva Atoll, 

 Malediven (Borradaile 1905). 



Da Inabas Material noch nicht bestimmt war, für Japan neu. 

 Untergrund: Auf Agiaophenia Suensonii Jäderholm. 



