50 Life Beneath the Waves. 



parent, and ornamented with fine silky 

 hairs, its colour is dark brown, with white 

 marks on the body, and it moves gracefully 

 along with a languid floating motion. It is 

 a very pretty object in an aquarium, but 

 I have not been able to keep it alive for 

 more than a few months. The other 

 Spider-crab sketched is a much commoner 

 species, and is not nearly so light and 

 graceful, its body being opaque, and hard, 

 and covered with sharp spines and knobs r 

 and generally profusely adorned with sea- 

 weeds, which sometimes flourish so luxu- 

 riantly that the shape of the crab is- 

 scarcely perceptible ; and very curious- 

 does he look as he crawls slowly through 

 clear water, with his burden of variegated 

 seaweeds waving around. The legs are 

 long and slender, but the arms are strong 

 and stout, and both legs and arms are 



