137 



thecae, elongated ellipsoidal. without circular olevations l)ut only vvitli irregulär depressions; 

 niouth-part short, tubulär, with eveii edge. 



Colour. Yellowisli browii. 



Locality. West of Misaki, Sagami Sea, (i m, on sea-weeds. 



Date. Gonothecae fouud in January. 



This species is iiuich more strongly buiit thau Nr. 9 |S. indivisa Bale]. Altbough 

 the genus Sertularella has gonothecae with circular elevations, there are exceptions, of 

 whii-h the present species is an esample. Unfortunately only a few ripe gonothecae have 

 been observed; hence some doubt is left as to whether this species is to be referred to 

 Sertularella. Ripe gonothecae will probably be found, if one collects in the West of 

 Misaki in February or March." (Inaba 1890.) 



Sertularella trideulata (Lamourous 1816). 



(Fig. 111-113.) 



Tluiiaria lata, liale 1884 p. 120 tab. 7 fig. 4. 



— hyalina. AUman 1888 p. ü9 tab. 33 fig. 2, 2 a. 

 Nr. 17. Thuiaria sp. Inaba 1890 fig. 4ö— 48. 

 Thuiaria lata. Bale 1894 p. 103 tab. 4 fig. 1. 

 Sertularella lata. Nutting 190t p. 85 tab. 18 fig. 10. 

 Sertularella lata. \ i p. 948. 



? - Torreyi. } N""'"= '^O" { p. 949 tab. 4 fig. 4; tab. 11 fig. 2-3. 



— lata. Billard 1907 e p. 346 Textfig. IV. 



— tridentata. Billard 1909 d p. 312. 



— — . Billard 1910 p. 14. 



Da Gonotheken fehlen, so ist eine definitive Bestimmung unmöglich. Die Gonotheken 

 sind beschrieben von Bale (1894) und Billard (1907 e), abgebildet nur von Bale. 



Für Japan neu. 



Nutting (1906) fand die Art in Hawaii. Sonst bekannt von Australien, Torres- 

 Stralie, Madagascar, Mozambique, Pernambuco. Bermuda (nach Billard 1907 e), also in 

 allen warmen Meeren. 



„Nr. 17. Thuiaria .sp. (Inaba 1890 Fig. 46, 47, 48.) 



Trophosome. Stem 50 mm high, thick, the lower part composed of manv tubes, 

 which separate at the base and become the creeping hydrorhiza. From either side of the 

 main stem there grow out many straight, parallel, alternate branches, which are longer 

 towards the base, and the longer ones with alternate secondary branches; the stem and 

 the branches lying all in one plane; the joints being of irregulär length. Hydrothecae in 

 two rows, one on either side of stem and branches, sub-alternate, curved, tubulär in form, 

 the greater part coalescing with the stem or branch, only the upper end being free and 

 terminating with a circular opening. 



Gonosome. Unknown. 



Colour. Light brown. 



Locality. Shishigahana, west of .Jogashima, Saganii Sea, about 10 m, on rocks. 

 Abh. d. IT. Kl. d. K. Ak. d. Wiss. KI. Suppl.-Bd. 2. Abb. 18 



