A REPORT ON THE CYCLOSTOMATOUS BRYOZOA OF JAPAN. 



339 



specimens is composed of five non-flexibly adnate members. The first or 

 basal member is an ordinary zooecium to which is attached the second 

 member, i. e., the ovicell. The third member is adnate to thè ooecium 

 with nearly its entire length. The fourth member is adnate to the third ; 

 and the fifth, in its turn, to the fourth. Whereas, in the Californian form, 

 the fourth and the fifth members do not exist, there being in all only three 

 members to an ooecial internode. Whether the difference indicated suffices 

 to base specific distinction upon, may be left a question. 



In the mode of branching and in the zooecial arrangement of ordinary 

 internodes, the species seems to agree closely with Crista geniculata 

 Milne-Edwards, but differs somewhat from it in the features of ovicells as 

 well as in the zooecial arrangement of ooecial internodes. Formula of a 

 fragment : 



(I'+I+r 1 ) 



(l + j r ) 



(l r + I +r l ) 



(r + i +r l ) (r+i+r 1 ) 



(r+l+r 1 ) 



Measurements : 



mm . 



Diameter of zooeciopore o. 10 



Length of zooecia 0.74-0.86 



Length of ovicell 0.73-0.8 



Breadth of ovicell 0.303 



Ooesiopore 0.04 X 0.06 



5. Crista ramosa Harmer 1 89 1. 



Crista ramosa, Harmer 1891 (1), 134, 163, pl. xii, figs. 10, 11. 



Crista fistulosa. Busk 1875 (4), 5, pi. vi, A, figs. 1-2. 



Crista denticulata, (pars) Hincks 1880 (3), 423, pi. Ivi, fig. 9. 



A few number of small fragments of this species were found, attached 

 on an example of Stcganoporclla magnilabris Busk, which came from a spot 



