29S " ENDEAVOUR " SCIENTIFIC RESULTS. 



from each side, so that the hydrocladium is situated between 

 the two branchlets. I have not seen in any other species 

 exactly the same form of ramification. 



Locs. — Fifty miles south of St. Francis Island, South 

 Australia, 30 fathoms. 



Fifty miles south of Cape Wiles, South Australia, 75 

 fathoms. 



Great Australian Bight, 80-120 fathoms, and 40-100 

 fathoms. 



Genus Nemertesia, Lamouroux. 



With Nutting, I regret that the old-established name 

 Antennularia should be abandoned in favor of Nemertesia ; 

 some observers, however, have always adhered to the latter 

 name, which was published by Lamouroux in 1812, and 

 must, therefore, take priority of Antennularia, which dates 

 from 1816. 



The only species observed — N. ciliata — differs widely in 

 habit from its congeners ; the expanded hydrosoma, with 

 its branches in one plane, and its numerous little pinna tely- 

 arranged branchlets with their scarcely-visible hydrocladia, 

 giving it more the aspect of a Plumularia. 



The species described by Billard as Sibogella erecta^ is also 

 provided with a multitude of little branchlets, but they 

 differ from those of N. ciliata in being in several planes 

 instead of pinnately arranged, and further in being given 

 off from the primary tube, while those of N. ciliata spring 

 from the supplementary tubes. 



Nemertesia ciliata. Bale. 



Nemertesia ciliata, Bale, Biological Results " Endeavour," 

 ii., 4, 1914, p. 170, pi. xxxvi., fig. 1. Id., Briggs, Proc. 

 Roy. Soc. N.S. Wales, xlviii., 1915, p. 307, pi. x., fig. 3. 



Hydrophyton reaching about a foot in height and four or 

 five inches in width, compressed, profusely branched, poly- 

 siphonic, branches originating from the supplementary tubes ; 

 branchlets very numerous, mostly monosiphonic, biserial, 

 from opposite to alternate, approximate, divided into distinct 

 internodes of varying lengths, each of which, except the 

 proximal one or two, supports from one to six or eight whorls 

 of hydrocladia. Hydrocladia usually somewhat irregular on 

 the proximal portions of the branches, on the other portions 



1. Billard — Les Hydr. de I'Exped. du Siboga, I., Plumularidae, 1913, 

 p. 61. 



