84 



The present one is branched, divaricated, compressed, 

 truncated, covered all over with small prominent hollow 

 tubercles, arranged towards the end in lines crossing each 

 other obliquely, from which the animals protrude them- 

 selves, so as to appear quite rough ; and some specimens 

 are covered with a shining, varnish-like appearance, as if 

 the animals had dried when protruded from their little 

 holes. 



