BY C. J. WILD, F.L.S. 
91 
line, is a deep red, club-like, protuberant body, the tentacle r 
whilst towards the hind border, disposed in a wide circle aroun 
a raised orifice, is a series of eight erect, brown o jec s 
resembling miniature trees. These have their main stem an 
branches pure white with an axial red line along all the rami 
cations. These organs are the branchise and subserve the 
purpose of respiration. The mider surface of the body is occupie 
by a broad, light red. muscular foot, and this has the margin 
here and there puckered, and is rounded at both ends , it ex en 
somewhat beyond the body proper behind. Outside ^ ® ® ° 
this foot the frill beneath is sprinkled with minute dots ot red, 
which, being here and there more densely distribute , presen 
clouded apipearance. Beyond the front border of the °° 
the bluntly-conical head, almost wholly occupied beneath by two 
large, red, thick, leaf-like bodies— the labise, or lips— which spiing 
horizontally one on either side from a conspicuous mo 
Creeping slowly along the rocky sea bottom m and out 
numerous zoophytes, with its delicate frill waving and trembling 
with every motion ot the surrounding tide, this obiect w 
appear a thing of beauty not soon to be forgotten, and thoug 
all appearances a bonne Imiclw for a voracious 
fish, yet secure probably from their attack through being rende d 
distasteful by a mucous secretiou-noisoine, no doubt as m tl 
case of that poured forth by the allied nudibranch mollusc, 
Aplysia, with which in these seas Hexabranchus is associated. 
The genus Hexabranchus has recently been dealt with by 
Dr. Eudolf Bergh in an article entitled “ N'^dibranchien ^ 
well-known “ Eeisen m Aichipei aei r 
baden, 1878-1889) to eight 
previously ,ariation and that even one of 
individual forms exhibitin ,, individual 
these eight is of 
above described and on ex 1 11 Gaimard 
Hexabranchus flainmiilatus f ^ 
(“Voyage de 1 ’ Astrolabe I ’ under the name given, 
figured und deecnbed ‘ * gesigu.tion Hexabruiidraj send. 
“d *'» b? “d >• S“” 
wichensis in Ins \ oya^e 
