126 GLAUCUS ; OK, 



" All these arc very attractive occupants of an 

 aquarium. They are active and restless, though 

 slow in movement, continually crawling about 

 the rocks, and round the sides of the tank, by a 

 gliding motion produced by the attachment and 

 shifting of hundreds of sucker feet, which ai'C 

 protruded at will through minute pores in the 

 calcareous integument. Their showy colors are 

 exhibited to advantage on the dark rocks, around 

 the projections and angles of which they wind 

 their flexible bodies, now and then turning back 

 a ray, from which the pellucid suckers are seen 

 stretching and sprawling ; and as they mount the 

 glass, not only can their hues be admired, but 

 the exquisite structure of their spines, and the 

 mechanism of their suckers, can be studied at 

 leisure. 



" Every haul of the dredge brought up 

 several univalve shells, tenanted, not by their 

 original constructors and proprietors, but by 

 their busy intruder, the soldier crab {Pagurus). 

 Several species of this curious creature occurred. 

 . . . I shall only just allude to the beautiful 

 cloak anemone (Adamsia palliata), and several 

 other species of this charming family. Long- 

 legged spider crabs, of the genera Stenorynchus, 



