ASTRjEACEA. SAGARTIAD.E. 



THE TRANSLUCENT ANEMONE. 



Sagartia pur a. 

 Plate III. Fig. 6. 



Specific Character. Wholly pellucid-white, without markings. 



Actinia pellucida. Alder, Catalogue of Zooph. of Northunib. and 



Durh., 43. 

 Sagartia pellucida. Gosse, Annals N. H. Ser. 3, vol. i. p. 415. 

 pura. Alder, in litt. 



GENERAL DESCRIPTION. 

 Form. 



Ease. Adherent to shells from deep water : somewhat exceeding the 

 column. 



Column. Perfectly smooth, without visible suckers. Substance pulpy. 

 Form cylindrical, a little higher than wide, when extended, but nearly 

 flat when contracted. 



EisJc. Slightly concave ; the margin entire. 



Tentacles. Thirty or upwards, arranged in about three rows ; the inner 

 ones longest (about twice the diameter of the disk in length) ; diminish- 

 ing regularly outwards, the outermost row being rather short. The inner 

 ones are usually carried more or less erect, the outer arching downwards. 



Mouth. Set on a small cone. 



Colour. 



The animal is wholly without positive colour, except that the tentacles 

 have sometimes a slight tendency to become sub-opaque at each extremity, 

 when they assume a white appearance in these parts. Occasionally a few 

 white lines occur on the column ; but these appear to be merely the edges 

 of the septa, seen through the transparent integuments. 



Size. 



About a quarter of an inch in height, and one-sixth in diameter of 

 column ; expanse nearly half an inch. 



Locality. 

 The coast of Northumberland. On old shells from deep-water. 



