648 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 14 



lobate among the fascicles. The early development is characteristic as 

 they all begin with a few adnate tubules radiating in a flabellate form 

 from one side of the pro-ancestrula ; later the zoaria may assume various 

 forms and even become erect and branched. The tubules are usually in 

 connate series or groups but may be single over a large part of the 

 zoarium or its entire surface, and may be biserially arranged or scattered. 

 While the ovicells are usually broad and lobate between the fascicles, 

 examples may be found in which they are almost as simple as in Crisia 

 or Oncousoecia, and even in species with lobate ooecia, simple ovicells 

 may appear on the same zoarium with lobate ones. Also the ovicells may 

 occasionally surround tubules or fascicles as in Diaperoecia. The ooecio- 

 stomes are very important in the determination of the species, but in the 

 various genera they may be terminal, subterminal or more centrally 

 located. 



Key to the Genera of Tubuliporidae 



1. Zoarium adnate with slender lobes; tubules in connate single 



series, on each side of the midline; ooecium spreading the 

 full width of the lobe between the fascicles, the ooeciostome 



proximal to the first tubule of a fascicle Platonea 



Ooecium not so arranged 2 



2. Ooecium arcuate and much depressed between the fascicles, the 



ooeciostome terminal at the middle of the arcuate ooecium ; 



zooecial tubes thick-walled Bathysoecia 



Ooecium not arcuate, the surface inflated 3 



3. Zoarium composed of extremely high, folded fascicles; ovicell 



very elongate, simple, like a somewhat enlarged 



tubule Fasciculipora 



Zoarium usually flat and adnate, rarely erect and branched ; 

 tubules in clusters, radiating series or single ; ooecium 

 usually broadly lobed between the tubules or fascicles, some- 

 times smaller and simple Tubulipora 



Genus TUBULIPORA Lamarck, 1816 



Zoarium variable, encrusting and lobulate, repent and branching, or 

 erect and branching. Zooecia all on the frontal surface, arranged more 

 or less in transverse series or in groups, usually single near the ancestrula 

 and occasionally over the whole zoarium. The ovicell is an inflated 

 gonozoid between the tubules on the frontal surface, simple and pyriform 



