290 Transactions. — Zoology. 



species found and described by Captain Hutton to some other name, and I 

 therefore propose for it the name of Plumularia huttoni. 



PlumularixV huttoni, sp. nov. 



PI. hanhsii, Hutton, Trans. N. Z. Inst., Y., 1872, p. 259. 



Hydrophyton irregularly branched, reddish-brown, main stem and branches 

 filiformly wrinkled and composed of several tubes ; branches alternately and 

 closely pinnate; pinnsG leaning to one side. Hydrothecse approximated seated 

 in the axil of two incurved but unequal spines. Apices of both spines not 

 patent. Aperture of hydrothecoe sinuous and wide, with an obtuse tooth on 

 each side. Gonangia — ? Lyall Bay. (F.W.H.) A single specimen only, 

 lent to me by Captain Hutton. Fig. 38. 



Plumularia simplex, sp. nov. 



Hydrophyton short and bushy, scarcely one inch in height ; pale bro\\Ti. 

 Branches radical arising from a tuberous hydrorhiza, simple, undivided, pinnate. 

 Pinnte distant alternate leaning to one side ; jointed between hydrotheca). 



Hydrothecse distant, in two rows on inner side of pinnae, alternate, 

 campanulate, lips everted and dentate, teeth three equidistant, short and 

 rounded. No spines or tubular. Gonangia — ? 



Two specimens only. Ocean Beach after strong storms. (M.C.) Fig. 39. 



Plumularia incisa, sp. nov. 



Hydrophyton delicate, singly plumed, reddish-brown, short. 



Hydrocaulis radical arising from a tuberous hydrorhiza, simple, undivided, 

 pinnae close, sub-opposite. 



Hydrothecse approximated arising from axis of a short incurved tubular 

 process, which is slightly longer than the hydrotheca. 



Hydrotheca has a hollow incurved spinous process with a complete apex 

 arising from the outer side near aperture, aperture incised and lobed, lobes 

 irregularly imbricate. Gonangia^? 



From a specimen obtained by Captain Hutton in Lyall Bay, Wellington. 

 Figs. 40 and 41. 



Sub-order Campanularida, Johnston. 



Hydrosoma plant-like, chitine gelatinous, hydrorhiza filiform and creeping, 

 hydrotheca} thin and campanulate, supported on ringed pedicels, alternate or 

 irregular, gonophorcs deciduous ; produces free raedusoitls. 



Genus Lao77iedea, Lamouroux. 



Hydrosoma branched, pedicels short, hydrocaulis with ling joints, hydro- 

 theca) alternate and campanulate, gonophorcs stalked. 



Laomedea fjeniculuta, L. 



L. genicidata, Jolinst,, l.c.j p. 103. 

 Hydrophyton gclatinously transparent, about one inch high. Hydrocaulis 



