336 



Y. OK ADA 



(I2 + OV.+7+ t r + ; 4 ) 



(lO + OV. + 7 + 2 r + .l) 



(6+r + -v) 

 I 



(4+v) 



Formula of another fragment : 



(7 + ^+i r ) + (9+i r + -0 



-8 + ov. + 5+2 r + ,v) 



I 



(4+*) 



(i 3 +ov.+6+r s +^) 

 (S+x) 



The ovicell is found always at a position above the middle of inter- 

 nodes, not below it as in the specimens previously described by authors. 



Measurements : 



mm. 



Diameter of zooeciopore 0.06 



Breadth of zooecia 0.08 



Distance from aperture to aperture 0.36-0.44 



Breadth of branches 0.22 



Diameter of ooeciopore 0.04 



Length of ovicell 0.46 



Breadth of ovicell 0.32 



2. Crista e if m ata Maplestone 1904. 



Crista cumata, Mapleston 1904 (1), 390, pl. xxix, fig. 12. — Harmer 1915 (2), 103, pl. vüi, figs. 

 13-17- 



Crista cylindrka, Ortmann i8go (i), 5S, pi. iv, fig. 17. 

 Crista circinata. Waters 1914 (10), 840, pi. i, figs. 7-9. 



This species is represented in the collection by a number of fragments, 

 which probably belong to one and the same zoarium. They were obtained 

 at Okinosé Bank, from a depth of 400 fms. 



