70 AKT. 7. — I. IJIMA : IIEXACTJXELLJUA, IV. 



Spi dilation. 



The various spiciilar elements are in essential agreement with 

 those uf typical C. meijcrl. I may therefore confine my account 

 of the spiculation to only those points which for one reason or 

 another seem to me to be worthy of sj)ecial note. 



Among the parenchymahn, which ai'c ])redominantly diact- 

 iiis, there are occasionally observed hexactins of moderately large 

 si/e. This is exactly as in the typical species but is here specially 

 mentioned, since in the snl)species ruc/osa I have failed to dis- 

 cover any parenchymalia of hexactinic sha]>e. 



In all the larger specimens, the hypodcj-mal strands as seen 

 -with the naked eye or under the lens are on the whole some- 

 what coarser (u[) to 90 //. in thickness) and therefore more dis- 

 tinctly visible than in the individuals I have seen belougiug to 

 the tyjùcal Sjiecies. Moreover, they extend continuously to 

 considerable lengths without beconnng Ijroken at short intervals 

 in course. J>y branching and by intersecting v,ith one another 

 they form a line nieshwork with small angular meshes. Micros- 

 copic examination shows that these hypodermal strands consist 

 mainly of line diactins in fascicular arrangement. Pentactinic 

 hvpodermalia in condjination with the strands are comparatively 

 sparse (cfr. ]). 03), though they occur abundantly on the stalk. 

 The wide difference in character Ijetween the hypodermal lattice- 

 work as described aljove and that known to me from the typical 

 species will be apparent by comparing figs. 11 and 6 in PI. TV. 

 Howevei', the difference is a])parently one which becomes pro- 

 nounced oidy afier the subspecies under consideration has grown 

 to a certain large size. Thus, in the smaller specimens — say, in 

 those not over 100 mm. or so in height — the diactins and the 



