135 



Fig. 106. Sertularella indivisa Bale. 

 Nat. Größe. (1. Fig. 22.) 



Fig. 107. S. indivisa Bale. 

 Stämmchen mit Gonotheken. (I. Fig. 24.) 



,Nr. 9. Sertularella sp. (Inaba 1890 Fig. 22, 23, 24, 25.) 



Trophosome. Stern 20 mm liigli, without branches, consisting of many joints. Hydro- 

 thecae one to each Joint, directly under the constiiction, alternate, flask-shaped, the ex- 

 panded lower half attached to the .stein, tlie upper half somewhat narrowed, curved away 

 from the stein, the mouth of the hydrothecae slightly widened and with four teeth. 



Gonosome. Gonothecae attached to the stem below the hydrothecae, on the side of 

 the stem, in the basal pari, nearly three tinies as long as the hydrothecae, ellipsoidal, 

 with five or six ring-shaped elevations, separated by circular depressions; the mouth-part 

 short, tubulär, with three teeth, of which one is smaller than the other two. 



Colour. Transparent; gonothecae yellowish brown. 



Locality. „Boneri", north of .Jogashima, Sagami Sea; on terminal branches of Sar- 

 tjassum. — Between Misaki and Jogashima, about 5 m, on dead leaves of Zostera. — 

 Shimotsu-ura, West Coast of Kishu, about 2 m, on Sargassum. 



üate. Gonothecae found in January and July. 



This species was obtained at ,Boneri" together with Nr. 8 [Obelia geniculata var.]: 

 its luxuriant growth is hardly inferior to that of the latter. The gonothecae are also 

 surprisingly nunierous, there being no less than some twenty gonothecae in the lower 

 half of a stem less than 30 mm high. 



An other form was obtained in .luly; the .stems are somewhat shorter, the gonothecae 

 are borne on the hydrorhiza, but otherwise it is perfectly .simihir to the species liere 

 described, hence identified with it." (Inaba 1890.) 



