214 BERMUDA. 



Tersely at the posterior extremity ; front advanced, 

 and more or less inclined ; none of the feet termi- 

 nated by a fin. 



In this section we find the genus Gelasimus — ^the 

 typical species is the calling crab {Gelasimus vocans). 

 This, species of land-crab has the carapax smooth, 

 entire, sinuous anteriorly, and nearly quadrilateral, 

 but rather broader in front; right claw generally 

 larger than the left, the fingers of the smaller claw 

 being spoon-shaped ; colour, soiled brown above, with 

 a bluish-green mark on the anterior part of the shell. 

 This species burrows oblique and very deep holes in 

 our marshes near the seashore with its large claw ; 

 in its movements, which are very rapid, it holds up 

 the large claw in front of the body, upon the 

 slightest alarm, and extends the fingers in a menacing 

 attitude, This bold demeanour has doubtless given 

 rise to the name of Soldier crab. It has also obtained 

 the name of calling crab, from its habit of holding up 

 the large claw in front of the body, as though beckon- 

 ing to some one. 



The fourth section (Orhiculata) have the carapax 

 somewhat. orbicular, or ovoid, and always very soHd. 

 To this section belongs the genus Leucosia. The 

 animal which forms the type of this genus is the 

 Leucosia iraniohris : shell smooth above, depressed 



