42 Proceedings 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 (viii) identified a small specimen from Ternate with this 

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

 the following observations : — 



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

 consisting of several concentric and horny layers. The branches are much 

 compressed, and have a flexible axis. The spicules of the coenenehyma 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 (xv) provisionally referred some specimens to this species, but 

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



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

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

 species into the older /. juncca. 



» Localities. — Between Flat Island and Mauritius (Studer). Ternate 

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



Juncella barbadensis. 



Juncdla barbadensis Wright and Studer, i, p. 159, PL xxxiv, fig. 14. 



When Duchassaiug 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 harladensis or funiculina ; but at the same time note that certain 

 identification is impossible, owing to the \'ery brief description given by 

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

 might be made. 



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

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

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

 J. juncea. 



Wright and Studer note that in some respects their specimens resemble 

 J. flexilis Studer. 



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

 and I have no hesitation in referring it to J. juncea. 



Locality.— 0& Sombrero Island. 450 fathoms. 



' It is not improbable that this was a young colony of /. i/cmmacea. 



