THE ANATOMY OF THE MADREPORARIA. I. 



By GL Herbert Fowler, B.A., Keble Coll., Oxon; Berkeley Fellow of 

 the Owens College. 



[Plates XI, XII, & XIIL] 



By the kindness of Professor H. N. Moseley I have been enabled to 

 study the anatomy of certain Madreporaria obtained by him during 

 the voyage of H.M.S. "Challenger." As in lecture-courses and text- 

 books but little information is given relative to this ancient and 

 interesting group, and the few papers on the subject are scattered, a 

 short sketch of the more recent researches is prefixed to my own 

 results. Two forms only are described in this paper, Flabellum pata- 

 gonicum and Bhoclopsammia parallela : others, it is hoped, will follow 

 shortly. The text will be reduced as far as possible throughout. 



An acquaintance with the anatomy and development of an ordinary 



Actinia is presupposed in the reader, this being the type by which 



comparisons are made ; but a list of the more technical names used to 



describe the anatomical parts of the polyp is given, with the synonyms 



for the use of those desirous of consulting the literature of the subject. 



Mouth-disc = Mundscheibe, Peristome. 



Body wall = Leibeswand. 



Storoatodaeum (oesophagus) = Schlund-, oder Magen-rohr. 



Coelenteron = Darmhohle, Leibeshohle, Estomac. 



Mesenteries (sarcosepta) = Scheidewande, Parietes, Eeplis mesenteroides. 



Mesenterial filament (craspedon) = Mesenterialfaden, Cordon pelotonne. 



Septa (sclerosepta) rz Sternleisten, Cloisons, Lames. 



Theca = Mauerblatt, Muraille. 



