66 SAGARTTADiE. 



detached from the base, in S. venusta, as before described 

 in the case of A. dianthus. Miss Loddiges has favoured 

 me with information of the same phenomenon in this 

 species. 



The following are the localities known to me as inhabited 

 by the Orange-disk : — 



Guernsey, Dr. J. D. Hilton : (on Laminaria3 washed up) 

 Miss Guttle : Torquay, P. H. G. ; Clovelly (on oysters 

 from deep water), Rev. C. Kingslcy : Morte Stone, G. T. : 

 Lundy, G. T. : Tenby, P. H. G. : St. Gowan's Head, 

 P. H. G. : Puffin Island, E. L. W.: Bantry Bay, E. P. W. : 

 Belfast (abundant), C. Bosanquet. 



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. 



mmiata. 

 VENUSTA. 



nivea. 



