252 K. MITSUKURI : STUDIES ON 



jedenfalls selii' klein. Die Haut ist dünn, aber durch die reichliche 

 Kalkablagerung ziemlich steif ; 3 cm lang, 0,9 cm breit. Weiss. 

 In ihrem Habitus erinnert die Art an Ckcc. cucumis, von welcher 

 sie sich durch die Kalkkörper unterscheidet." (Lampeet). 



Remarlis : — It is not without some hesitation that I identify 

 these specimens with Lampekt's C. ohunca, as there are some 

 discrepancies between them and Lampeet's description. But the 

 proximity of the localities and the fact that the calcareous deposits 

 are alike, make me think that they can belong only to this 

 species. 



Of the two specimens, the larger is 3.4 cm. long and 1.5 cm. 

 broad, but the strongly wrinkled state of the body indicates that 

 it must have been much longer in life. There are two rows of 

 pedicels in each ambulacrum, with none in any interambulacrum. 

 Lampeet says there are some 30 pedicels in each row, but in the 

 specimen now before me, there are over 50 pairs of them in each 

 ambulacrum. On opening the body it was found to be full of a 

 large mass of genital tubes rolled up into a bunch. I was unable 

 to find any pharyngeal mass, it having probably been discharged. 

 Hence I could not make out any calcareous ring. Neither have 

 I been able to discover any part of the intestine. The body is 

 somewhat pentagonal. The calcareous deposits are very thickly 

 heaped up in the skin. In the body itself, they consist almost 

 entirely of four-holed, smooth-edged buttons or imperfect tables. 

 These consist of a disk, on which stands in many cases an im- 

 perfect spire, consisting of two columns and a cross-beam. The 

 cross-beam often extends beyond the two supports, and, bending 

 down, unites with the edge of the disk. I can not discover 

 reticulated ellipses anywhere in the body itself. In pedicels, the 

 buttons become much elongated and lozenge -shaped, with four 



