242 



3\. MITSUKUKI : STUDIES ON 



This sticks out with its point from the surface of the sldn. 

 Scattered between them, are much rarer, smooth buttons with 

 numerous holes (b). In tlio pedicels, there are in the lower parts 

 knobbed buttons with sharp pointed processes, the points of which 

 project out from the surface like the spines of the hedge-hog. 



Near the terminal part, the 

 supporting rods arc either slen- 

 der and simple or triradiate rods, 

 with one or moi'c of the ends 

 enlarged and perforated (c). 

 Finally, there are many-holed 

 delicate end-plates. 



In its native habitat, the 

 species clothes itself with pieces 

 of shells and stones, which 

 are held on the body by the 

 action of the pedicels. Kept 

 in jars, it throws off these 

 pieces. In the breeding season 

 (the summer) the ripe individuals throw out rei^roductive elements. 

 The males shoot forth the spermatic fluid, after which the females 

 begin to shed eggs, wliich easily undergo development under 

 observation. 



Undoubtedly tliis species is found in other localities of Japan 

 than Sagami Bay. 



Locality : — Japan (v. Marenzeller 1881) ; Sagami Bay ; Prov. Owari. 



Textfig. 47. 



Cucxvmaria ei'hiwda: a — Knobljed button 

 with a sharp process ; b — Perforatetl plate ; 

 c — Trimdiate supporting rotl. ( x 210.) 



59. Cncumaria Japonica Semper. 

 (PI. Vm., figs. 67—68 ; textfig. 48). 

 Cucumaria j'ajKmica Semper 1867 — '68, p. 236, Taf. XXXI., Fig. 5 ; Taf. 



