66 
SAGARTIAD^. 
detaclied from the "base, in S. venusta, as before described 
in the case of A. diantlms. Miss Loddiges has favoured 
me with information of the same phenomenon in this 
species. 
The following are the localities known to me as inhabited 
bj the Orange-disk : — 
Guernsey, Br. J. D. Hilton : (on Laminarice washed up) 
Miss Giiille : Toiciuay, P. H G. : Clovelly (on oysters 
from deep water), Rev. C. Kingsley: Morte Stone, G. T. : 
Lnndy, G. T. : Tenby, P. H. G. : St. Gowan’s Head, 
P. IL G. : Puffin Island, E. L. W.: Bantry Bay, E. P. TF. .• 
Belfast (abundant), C. Bosanqiiet. 
This species has close relations with S. nivea. Its 
colouring, however, so far as I have seen, is constant, 
without any approach to albinism ; and its tendency to an 
ovate outline also distinguishes it, though less satisfactorily. 
It may possibly be found hereafter that the two constitute 
but a single species; but in the absence of any intermediate 
condition, I think it best to consider them distinct. 
miniata. 
VENUSTA. 
nivea. 
