2^58 ProceeiJings of the Royal Irish Academy. 



is thin, and contains an external layer of clubs, and below this a layer of 

 double-clubs. The colour is dark red. 



Germanos (vm) identified a small specimen from Ternate with this 

 species. It had two branches' (the type specimen is simple). He makes 

 the following obser\-ations : — 



The colour is orange-red. The stem is cylindrical, with a rigid axis 

 consistiiig of several concentric and homy layers. The branches are much 

 compressed, and have a flexible axis. The spicules of the coenenchyma are 

 clubs and double-wheels. The verrucae are high, club-shaped, and are curved 

 towards the stem; they contain club-shaped spicules; the anthocodiae are 

 white, entirely retractile, and have small spindles. 



Hickson (.XT) pro\-isionally referred some specimens to this species, but 

 expressed an opinion that they might be young forms of J.juncm. 



The remarks which we have made with regard to J. fragUU apply equally 

 well to this species ; and we would confirm Hickson 's opinion and merge this 

 species into the older J.juncm. 



Localitks. — Between Flat Island and Mauritius (Studer). Ternate 

 (Germanos). S. Nilandu, Maldives, 25-30 fms. (Hickson). 



Joncella barbadensis. 



Jitncdla harha<Unsis Wright and Studer, I, p. 159, PI. XXXIV, fig. 14. 



^Mien Dnchassaing and Michelotti described this species, they emphasized 

 characters which have since proved to be of no specific importance. 



Wright and Studer, however, with considerable hesitation, regarded 

 two small fragments in the " Challenger " collection as young stages of 

 either barbadensis or juniculinn ; but at the same time note that certain 

 identification is impossible, owing to the very brief description given by 

 the authors and the absence of the type specimen to which reference 

 mi^ht be made. 



In the " Challenger " specimens the coenenchyma is thin, and the spicules 

 seem related to those of the J.juntta. They consist of unsymmetrical clubs, 

 double-stars and spindles, which give the same measurements as those of 

 J. jnncta. 



Wright and Studer note that in some respects their specimens resemble 

 J. JUxUis Studer. 



From the foregoing it is quite endent that this is not a distinct species 

 and I have no hesitation in referriag it to J. juncca. 



Localiij/. — Off > 'n'rero Island. 450 fathoms. 



' It ii Tioi improbable that this vu i joimg colony of /. fimMuet, 



