THE Zoo.ocist— FEBRUARY, 1875. 4315 
southern and western coasts. The species that are dominant are 
the globe-horn (Corynactis viridis) and the sandalled anemone 
(Sagartia sphyrodeta). These are found in profuse abundance, 
and in almost endless variety. Here is a schedule of the colours 
that I noticed in Corynactis, many of them answering to Mr. Gosse’s 
varieties, Smaragdina, Rhodoprasina, Chrysochlorina and Corallina, 
but there are some which refuse to be classified :— 
1. Rose-pink column and white tentacula. 
a: “a 33 chocolate ,, 
ap * * dark brown white-tipped tentacula. 
4, Fawn = lighter-coloured * 
5. Dark orange ,, dark brown white-tipped Fe 
6. Emerald-green,, rose-pink tentacula, having gold fillet. 
ie Bot i rich brown tentacula. 
8. . -- gold disk and white-tipped tentacula. 
In Sagartia sphyrodeta the same extremes of variely were 
observable from the var. Candida, with opaque-white disks, to 
the var. Xanthopis, where the “disk assumes various shades of 
yellow, from a pale chrome or lemon-colour to a deep orange or 
even dull vermilion.” These two species admirably illustrate the 
law that when a species finds the particular conditions suited to its 
existence, together with abundant food, it becomes dominant, to 
the exclusion of other species. No other species —although 
Dianthus, Bellis, Viduata, Venusta and Nivea are found here-— 
occur in anything like such profusion at these depths. High up 
above,—thirty feet perhaps,—on all sides of the rock, and marking, 
almost as exact as a geometrical line could be drawn, the height of 
the neap tides, were myriads of the common anemone (Actinia 
Mesembryanthemum), also exhibiting many varieties of colour, 
from crimson and liver-coloured to green, but the var. Rubra was 
mostly dominant. They looked like halves of over-ripe plums, or 
masses of red-currant jelly, and appeared so thick on the rock that 
scarcely a penny piece could be placed between. The intermediate 
spaces were filled by barnacles and limpets, so closely covering 
the surface of the rock that its original character could not be 
identified. Since my return one of the individuals of Corynactis 
viridis divided in the aquarium “ spontaneously” into three distinct 
animals, which took food at the end of a fortnight, the division 
being not by gemmation, but, as Professor Dana calls it, by 
“superior budding” or “ spontaneous fission,” the fission in each 
instance commencing at the margin of the disk. I do not remember 
