Mr. Biyce Wright on new Species of Corals. 77 



from showing a white portion on the stem below the ordinary 

 deep-crimson coenosteum. This is sometimes ilkisory, and 

 does not always represent the true base of the coral, but is 

 simply dead matter, caused by the solidification of the coeno- 

 sarc, the frond (perfect in itself) being only a portion of the 

 entire coral. 



ANTHOZOA. 



Amongst the numerous varieties of Anthozoan zoophytes 

 of the Eupsammidean types contained in the Brassey col- 

 lection is one which I am unable to refer to any recognized 

 genus, its affinities lying between BalanophyUia and Den- 

 drophyllia. Like the former genus, it is free, simple, and 

 erect ; but the septa do not coalesce in either of the three 

 examples, nor are they so many in number, or the columella 

 so massive and well developed ; and in the latter genus the 

 corals are imbedded on either side of the branches ramifying 

 from the main stem. The coenenchyma overrunning the knoll 

 upon which the corals are based is probably less an integral part 

 of the animals themselves than a secretion laid down to render 

 compact the decomposed trap-rock upon which they stand, so as 

 to give them a firmer hold. There being no genus known to 

 which it can be assigned, I have erected it into a new one, 

 which I have much pleasure in dedicating to its discoverer, 

 Lady Brassey. 



Fam. Madreporaria Aporosa. 



Subfam. EupsAMMiDJE, Lamarck. 



Genus Brasseyia, Bryce Wright. 



Brassey ia radians , no v. sp. (PL IV. figs. 1, 2.) 



Corallum isolated, simple, erect, placed on the summit of a 

 massive irregular-shaped block, the coenenchyma being con- 

 fluent between the corallites and over the entire mass, which 

 has grown upon a decomposed trap-rock. The whole of this 

 basal portion is incvusted with numerous marine organisms, 

 Polyzoa, Herpida^^ Sjnrorhisj&c. Corallum simple, irregular in 

 form, rugose, swollen at the base, and contracting towards 

 thecalice, ovoid ; longest axis of largest coral at base 1^ inch, 

 at calice 1 inch ; height 2 inches. Costaj broad, finely punc- 

 tured or granulated, without cross bars. Epitheca dense, 

 walls thick. Periphery ovoid and indented, irregular in out- 

 line. Fossula deep; columella spongious, occupying about 



