ARTISTIC TOUCHES Ta 
the chelipeds are of no unusual length. The very long 
external antenne are a special feature of this crab. When 
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Fic. 3.—Corystes cassivelaunus (Pennant), a female specimen, with the features on the 
carapace slightly accentuated. [Herbst.] 
the animal is burrowing in the sand according to its wont, 
the flagella of these antennz are brought close together, 
and the tips alone project from the funnel of the burrow. 
They are provided with stiff hairs on the inner margin, 
which no doubt assist in maintaining the funnel-opening 
of a due width. The joints of the peduncle can be strongly 
bent, and by this means, as Mr. Couch observed, the hairy 
fringes of the flagella can be made to brush one another 
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