loo SIDNEY F. HARMER. 



developed, and become radial in fertile lobes. Ooeciostome consisting of a 

 greatly compressed tube, whose ooeciopore is slit-like. The longer diameter 

 of the slit averages about 165 fi (130 — 180 /t), being equal to or somewhat 

 less than the diameter of an orifice. The tube is not recumbent on a series 

 of zooecia, but stands up freely from the roof of the ovicell, its two narrow 

 edges being placed in a radius of the colony. 



This seems to be an essentially Northern species, and I have no evidence of 

 its occurrence in British waters. I have examined specimens from Greenland 

 (the locality from which the type-specimens came), Barents Sea (50 fathoms, 

 growing on Cellularia peachii), and Hammerfest ; and I have also obtained 

 what I believe to be a young form of this species from Godosund, Bjorne Fjord, 

 Norway. The specimen figured (fig. 4) is a stunted, somewhat abnormal form 

 of this species from Barents Sea (see the description on p. 82), but it well 

 illustrates its characteristics by showing five perfectly typical ooeciostomes. 



Professor Smitt (40, pp. 400—402, 454, 458), who is fol- 

 lowed in this respect by Mr. Hincks, regards T. phalangea of 

 Johnston as identical withT. flabellaris, although he believes 

 the original T. phalangea of Couch to be identical with T. 

 lobulata, Hassall. It appears to me that the characters 

 of the ooeciostome are amply sufficient to separate T. pha- 

 langea from T. flabellaris. I first became acquainted with 

 the ooeciostome of the latter in two colonies from Hammer- 

 fest, kindly sent to me by Dr. Nordgaard. The collection of 

 Polyzoa given to the University Museum of Zoology by Miss 

 E. C. Jelly contained a moderate number of specimens on sea- 

 weed from Greenland. The form and size of the ooeciostome 

 were identical in these and in the Hammerfest specimens. 

 The colonies from Greenland, although very small and 

 stunted (one of them, with only twenty-seven zooecia, possess- 

 ing a complete ovicell), did not resemble the Barents Sea 

 specimens from deeper water in possessing a multiplicity of 

 ovicells. 



It can hardly be doubted that the Greenland specimens, sent 

 by Miss Jelly, belong to Fabricius' species. The flabelliform 

 shape, the connate series of zooecia, the occurrence on sea- 

 weed, and the small size (given by Fabricius as Ig lin. in trans- 

 verse diameter), all agree closely with the original description. 

 The species has been more fully described by Smitt, who gives 

 excellent figures. In two of these (40, pi. ix, figs. 6, 8), re- 



