MeasuTements- 



AET.22. CYCLOSTOMATOUS BRYOZOA CANU AND BASSLEE. 13 



Affinities. — The exterior aspect is absolutely that of EntcHoplwra 

 delicatula Busk, 1875, but the present species differs not only in the 

 form of the ovicell, but in its larger micrometric dimensions. 



Occurrence. — Eecent; Sulade (Sulu Archipelago), Philippine Is- 

 lands {Albatross station D. 5147). 



Cotypes.—Q^i. No. 7373, U.S.N.M. 



MECYNOECIA LONGIPORA MacGillivray, 1895. 



Plate 1, figs. ^11. 



1895. Entalophora longipora MacGh^livkay, A Monograph of the Tertiary 

 Polyzoa of Victoria, Transactions of the Royal Society of Victoria, 

 vol. 4, p. 140, pi. 20, fig. 14. 



Oeciostome . 16-. 20 by . 12 mm. 



Distance between orifices. 1.25-1, 42 mm. 



Diameter of peristome and of tube_-. . 16 mm. 

 Separation of orifices .80- .90 mm. 



Structure. — The ovicell is placed in the vicinity of a bifurcation. 

 It is elongated, elliptical, salient, very finely porous. The oeciostome 

 is terminal, elliptical, transverse, little salient; the oeciopore is par- 

 allel to the meridian zoarial plane.* 



The tubes are slightly convex, often flat and bordered by a some- 

 what salient thread. Tlie latter character is not indicated on Mac- 

 Gillivray's figure, but it is described in the text. 



The scale of magnification of MacGillivray's figures is not good, 

 and we can not be perfectly certain of our determination in the ab- 

 sence of typical specimens. 



Occurrence. — Eecent; Anima Sola (between Burias and Luzon) 

 Philippine Islands {Albatross Station D. 5217). 



Geological distribution. — Miocene of Australia. 



Plesiotypes.—Cd,t. No. 7374, U.S.N.M. 



MECYNOECIA (?) VERTICILLATA Goldfuss, 1827. 



Plate 1, figs. 16, 17. 



1827. Ceriopora verticillata Goldftjss, Petrefacta Germaniae, vol. 1, p. 36, 

 pi. 11, fig. 1. 



1899. Spiropora verticillata Gregory, Catalogue of the fossil Bryozoa in the 

 British Museum, Cretaceous, vol. 1, p. 256, pi. 11, fig. 5 (Cites bibliog- 

 raphy and geologic distribution). 



The ovicell of this species is very rare. It is a greatly elongated, 

 Comdex sac, longer than three verticells and terminated by an ellip- 



* Often the oeciostome appears to be directed toward the bottom, but this is an 

 optical illusion. In realty the orifice is exactly parallel to the direction of the tube 

 itself and the oeciostome is perpendicular to it. It is therefore difficult for the larva 

 to fasten itself upon the zoarium. The term " orthogonal " indicates this arrangement 



