70 
SAGARTIADiE. 
I scrambled across, just as of old ; the farther chasm (p. 39) ; 
and the large dark tide-pool in which I had seen the Prawn ; 
— all were exactly as when I first made acquaintanee with 
them six years ago. This last pool is still fringed with 
Oarweeds crowded with Laomedea forests, and the farther 
walls are still spotted over with daisy-like Snowy Ane- 
mones, just where I saw them first, and in all probability 
the very same identical individuals. 
But in the interim I had become familiar with the fair 
nivea, in what I may call its metropolitan home. It is in 
the numerous caverns and dark rock-pools into which the 
limestone formation on the Pembroke coast is hollowed, 
that this lovely species is seen to advantage ; especially in 
the dark holes of Monkstone, the Caves of St. Catherine’s 
and St. Cowan’s, and the oversliadowed pools of Tenby 
Head and Lidstep. Here, as we peer into the clear water 
of these obseure Avells, we see the Snowy Anemone studding 
the rugged sides by hundreds, like bright stars on the mid- 
night sky, singly and in constellations. Here, too, swarm 
its eongeners and companions, the equally lovely rosea and 
vemista ; and this trio of graces are the very gems of the 
Demetian rocks. 
When covered by water, nivea expands freely, and con- 
tinues long unfolded ; but, in situations where it is left by 
the tide, it either withdraws into its hole, or, if this be 
placed on the side of a perpendieular or overhanging rock, 
it hangs out in the form of a lengthened wart, with a drop 
of water depending from its drooping head, like a dewdrop, 
in the centre of which a speck of white reveals the peeping 
tips of the contracted tentacles. 
]Mr. Holdsworth has observed in this species that eurious 
form of elongation of the tentacles described under S. 
miniafa. Here, however, no feAver than ten or twelve of 
the tentacles of the first and second rows hung doAvn, 
