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SAGARTIADJi. 
Size. 
Large specimens attain the thickness of an inch, the height of an inch 
and a quarter, and the diameter of an inch and a half, when fully 
expanded. 
Locality. 
The south-west coast of England. Crevices and rock-pools. 
Varieties. 
a. Immaculata. The condition above described. 
Obscurata. Disk tinged with faint greyish-olive ; the tentacular 
region smoke-grey, undefined. This variety sometimes has the column of 
that rich orange-brown hue which is characteristic of this group. 
It was on the north side of the limestone promontory 
known as Petit Tor, on the south coast of Devon, that I 
first met with the Snowy Anemone, in the spring of 1852. 
The rock here is hollowed into large cavernous pools, 
isolated only at very low tides, and dark with the shadow of 
the slimy sponge-covered precipices that arch over them ; 
where Laminarice grow abundantly, affording many a nidus 
for profuse forests of parasitic Hydroids of the genera 
Sertularia, Plumularia, and Laomedea. The little red 
siphons of thousands of Saxicavce hang domi from the 
holes which they have excavated in the solid limestone, 
each terminated by a diamond drop of water, awaiting the 
moment when the returning tide shall cover their abodes, 
and restore to them activity and enjoyment. It is their 
season of periodical idleness and repose. Among the 
roughnesses of the rock, and the conical papillary pores of 
the sponges, which, olive, yellow, and scarlet, stud the sur- 
face, — green Nereidous worms glide along, in and out, by 
means of the curious packets of slender bristles, alternately 
projected from every segment and withdrawn, that serve 
them instead of feet. Below the water-line, that is to say, 
