ITS LOCALITY. 91 



A. hellis is abundant. The position of these pools 

 is several feet above low-water, but many species of 

 interesting Alr/m grow in them. The Actinice in 

 question strike the eye at once by their brilliant con- 

 trast with the rock, though they are not large ; none 

 that I have seen exceeding an inch in diameter in 

 widest expansion. Like A. hellis, they can be ob- 

 tained only by means of the hammer and chisel ; 

 for they retire into their holes on being annoyed, so 

 that they cannot then be removed, nor even their ba- 

 ses be touched. By chiselling away the rock, however, 

 an operation of considerable difficulty under water, 

 I detached several, which I brought home for exami- 

 nation. The long white seminal filaments were dis- 

 charged copiously by the larger ones, both from the 

 detached base and from the mouth ; and these, as 

 usual, were endowed with independent motion when 

 liberated, by means of the delicate cilia with which 

 they are covered. Some of the tentacles when disten- 

 ded, as will presently be described, showed, in their 

 pellucid interior, beautiful coils of these filaments. 



The body (Plate I. fig. 6.) when contracted is glo- 

 bose, slightly wrinkled both transversely and longitu- 

 dinally, and studded with white glands, not warty, to 

 which minute gravel, &c. adheres. The ground co- 

 lour is umber-brown, sometimes verging to reddish- 

 brown. The disk, in the ordinary state of expansion, 

 undistended, presents an exquisite marginal fringe of 

 tentacles, (fig. 5.) of uniform rosy-red, the colour very 

 pure and brilliant, the outmost rows perhaps showing 

 a slight tendency to lilac. When these are just pro- 

 truding from the opening animal, like a budding 



