THE ANATOMY OF THE MADREPORARIA. 

 II* 



By G. Herbert Fowler, B.A., Keble Coll. {Own), Berkeley Fellow of 

 the (keens College, Manchester. 



[With Plate I.] 



In a previous paper (4), I have described the anatomy of a solitary 

 Imperforate coral, Flabellum ; and of a branching Perforate, Rhodop- 

 sammia. The present memoir treats of two examples of colonial 

 Perforate forms, Madrepom Durvillei and M. aspera. 



. Madrepora Durvillei (Milne-Edw. and Haime). 



Two fragments of this perforate Madreporarian Avere kindly 

 entrusted to me for study by Professor H. N. Moseley, who had 

 obtained them during the voyage of H.M.S. "Challenger." 



The species was founded by Milne-Edwards (1) from a part of 

 the M. rosea of Esper, but as his account is very incomplete, Mr. 

 J. J. Quelch, of the British Museum, has furnished the following 

 description of the coral. I am glad to be able to take occasion to 

 thank him for this and many other courtesies. 



a. " Corallum : Arborescent, spreading, and remotely ramose, 

 or occasionally sub-prostrate, and almost destitute of branchlets on 

 the under surface. Branches often nearly 2 cm. thick, becoming 

 very thin towards their extremity, sub-terete, elongated, covered 

 irregularly with crowded capillary polyp-bearing branchlets, which 

 generally give to the branches a sub-cylindrical outline of about 



* For Part I. Bee " Quarterly Journal of Microscopical Science," August, 1885, and 

 "Studies from Hie liiologioal Laboratories of the Owens College," Vol. I., 18811. 

 V. 



