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The sternal plastrori is broadly elliptical, almost circular; 

 in front it is somewhat pointed; its height only slightly sur- 

 passes its breadth. The anterior sternite is the smallest, it 

 has the shape of a low isosceles triangle , its point is bent 

 somewhat upwards. The following sternite is the largest of all. 

 The two together occupy almost half the length of the whole 

 plastron. The whole middle part of this sternite is concave, 

 but especially is this the case with the back part — its object 

 being to contain the end of the abdomen. The two furrows 

 which run in a slanting direction towards the middle are more 

 or less distinct; they are deepest towards the outside of the 

 margin of the plastron; towards the middle of the latter they 

 disappear. The outer margin is somewhat swollen. 



The next sternite is much smaller and wedge-shaped; it 

 does not reach the middle of the plastron. Its posterior edge, 

 which is at right angles with the longitudinal axis of the carapace, 

 bends strongly forwards at the point where the sternite lowers 

 itself to help to form the cavity which contains the abdomen. — 

 The next two sternites also get narrower farther in, but both 

 reach the middle Une. On the posterior one, a deep furrow is seen 

 which begins right at the outer margin, and runs parallel with 

 the posterior margin of the sternite, and at short distance from 

 the latter, the furrow suddenly disappears before reaching the 

 middle line. 



The episternites are generally seen very distinctly. They 

 have a pointed projection at the back which projects in between 

 the basal-segments of the walking feet and the sternites, and 

 sometimes reaches the middle of the next sternite, sometimes 

 still farther. 



The front pair of walking feet are strongly developed, and 

 end in large chelae of which the right one is stronger than 

 the left. The first segment is, like the two next, of small 

 size ; on the border turning inwards towards the sternal 

 plastron, there is a small spine which corresponds with an 



