362 



ECHINODERMS OF THE BRITISH ISLES 



in the skin, not in the appendages. No terminal disk in the 

 tube-feet. Colour in life violet ; the colour sometimes keeps 

 fairly well on preservation. Grows to a length of ca. 17 cm. 



Fig. 213. — Lcetmogone violacea ; ventral (1) and dorsal side (2). Slightly 

 reduced. (After Theel, " Challenger " Holotk., i.) 



In British seas this species is abundant, especially in depths 

 of ca. 900 m. off the w^est coasts and in the warm area of the 



Fig. 214. — Deposits of Lcetmogone violacea. 

 (After Perrier, " Talisman " Holoth.) 



Faroe Channel. (Very probably the species iy. Wyville-Tliomsoni 

 occurs together with it, the two species being not distinguishable 



