SOLDIEK OH HEBjnT OBAB. 



AqUAitltTM. 



curious incidentg. As 1)60011168 soldi6rs th6y fight, and have 

 passag6s of arms with on6 another; Bometimea one soldier 

 crab will even drag another out of the shell in which he 

 lives, and take forcible possession of his premises. Then this 

 crab, living in an old whelk-sheU, often carries about pick- 



apact a fine sea-ane- 

 mone, riding upon the 

 shell as an outside 

 passenger. It is at 

 the same time almost 

 always associated with 

 a beautiful sea-worm, 

 a two-lined nereis, that 

 lives in a retreat of its 

 own between the shell 

 and the crab's body. 

 When the soldier is off guard, and is munching hia bit of dinner, 

 the head of the nereis will commonly be seen gliding round the 

 crab's right cheek and passing between the upper and lower 

 foot-jaws. Without scruple this intrusive lodger will then drag 

 some of the food even out of the mouth of the warrior ; and 

 although the crab holds on and makes due efforts to rescue his 

 property, or may perhaps frighten the nereis from its hold by 

 making a terrible and sudden start, he. never by any chance 

 attempts to hxirt the worm, or displays wrath at the indeHoate 

 behaviour of his delicate acquaintance." 



Kothing shows so beautifully in the marine aquarium as the 



various species of 

 Actinia, or "' sea- 

 anemones." Ellis, 

 a celebrated inves- 

 tigator of this de- 

 partment of natui-al 

 history, and who 

 lived and wrote 

 about a hundred 

 years ago, was the 

 first to apply to 

 these creatures their 

 " HESS." floral appellation, 



because "their ten- 

 tacles, being disposed in regular circles and tinged with a 

 irariety of bright lively colours, very nearly represent the 



794 



