THK ANNAI.S 



A XI) 



MAGAZI.VE OF X AT URAL HISTORY. 



[KICIITII SERIES.] 

 No. 53. M.VY 10 L2. 



LI. — A Structure in AJeotiella ([itiminopora) coiitoi'ta 

 (Michelin) and some other Bri/ozoa, together with Remarks 

 on the Adeonidte. By Arthur VVm. Waters, F.L.S, 



[Plates X. & XL] 



Some specimens of Adeonidse will be dealt with in papers, 

 almost ready, on collections made by Mr. Cyril Crossland, 

 ]\I.A., F.L.8., at Zanzibar and Cape Verde Islands ; but 

 having come upon a most carious structure in several species 

 of the family it seems well to deal provisionally with it, as 

 thereby I may receive help towards clearing \x[) several un-^ 

 explained points. 



Many years ago I saw in Adeonella polystomella, Reuss, 

 from Naples, bodies looking like short parasitic worms nearly 

 filling up the zooecium. These slides have been examined at 

 various times and it seemed as if the structure really must be 

 Bryozoan, though satisfactory proof was not seen at the 

 time. However, when I found the same thing in Adeonella 

 lichenoides^ M.-Edw., from Cape Horn, that seemed to show 

 tiiat it could not be parasitic. While looking upon this as 

 one of the numerous puzzles we have in tlie Bryozoa, some 

 well-preserved Adeonella contortn, Mich., from the Cape 

 Verde Islands showed numbers of these bodies in which 

 much more detail was visible than in the two previous 

 species. Again, in cutting Adeonella i^olymorpha, Busk, 

 from Bass's Straits (' Challenger ') for confirmation, only 



Ann. & Mag. V. Hist. Ser. 8. Vol ix. 33 



