48o 



HIROSHI OHSHIMA : 



To the locality reported by v. Marenzeller, i.e., east side of Eno 

 Shima, Sagami Bay, I may add the following : 



Joga Shima, Misaki. Three specimens. (Cat. no. 1 114). 



Bishamon (a few fathoms), near Misaki. One specimen. (Cat. 

 no. 1127). 



Moroiso, Misaki (Veretillum beach). Several specimens. Mitsu- 

 kuri coll. Aug. 12, 1897. (Cat. no. 1128). 



The largest specimen is 55 mm. long and 8 mm. broaa. Sigmoid 

 hooks measure 63-120 [i in length, exceptionally only 47 /j. in the 

 anterior region of body. The hooks gather together into the charac- 

 teristic conical " hook-papillae," each of which may contain them 

 numbering up to sixteen. In the anterior region of body a papilla 

 contains only two hooks, or even one only. The wheels are extreme- 

 ly infrequent, though near the base of tentacles they can be found 

 without much difficulty. 



Clark presented his Scoliodota as being characterized by the pres- 

 ence of ten tentacles and of hook-papilla;, and by the absence of 

 wheels. The discovery of wheels, extremely rare though these be, and 

 the presence of tentacles in the same number have reduced the differ- 

 ences of the present species from Trochodota to the one point that the 

 former is in possession of hook-papillae, which are wanting in the latter. 

 Now, in view of the fact that in Tazniogyrus australianus the presence 

 of hook-papillae is not regarded as giving to that species a distinct 

 generic status, the tenability of Clark's genus Scoliodota becomes 

 doubtful. I should not wonder if it would turn out to be inseparable 

 from Trochodota. 



20. Toxodora pacifica Ohshima. 



Toxodora pacifica Ohshima, Albatross Holothurians (m.s.). 

 The species is based on a series of specimens secured by the 

 'Albatross " in Suruga Bay (Station 5073). 



The character of the genus, very meagrely described by the 



