230 PENTACTJS. 



seas. The first, that before us, appears to be among the 

 most abundant and extensively distributed of all the 

 British Holothuriada:. The Ocni are sluggish creatures. 



The Brown Sea-Girkin is about three-fourths of an inch 

 in length, and sometimes longer. It is regularly pen- 

 tangular, obtuse posteriorly, and truncate anteriorly. 

 There are about nine large suckers on each of the angles. 

 The tentacula are very long, and digitate or simply pin- 

 nate towards their extremities. They are white, as also 

 the suckers ; but the body is pinkish-brown, with darker 

 specks, and quite smooth. It lives on shell-banks at 

 various depths, both on the east and west coasts. At the 

 mouth of the Frith it frequently comes up on the haddock- 

 fishers 1 lines. In the Frith of Clyde it is common. It 

 also occurs on the shores of the Isle of Man. Mr. W. 

 Thompson states that it is the most common species taken 

 by dredging in the loughs of Strangford and Belfast. 



The vignette represents a Runic or Buddhist cross near 

 Ramsey Bay, Isle of Man. 



•"tfvjPjSI 



■ 



' 



