DUTCH BORNEO-EXPEDITION. 97 



The meri reach but little beyond the lateral margins of 

 the cephalothorax, the upper edge is unarmed, but trans- 

 versely rugose, the two angles of the lower surface are 

 granular and rather sharp, especially the outer. The lower 

 surface bears a small conical tubercle distally near the 

 inner edge and is somewhat granular around it. The 

 outer surface is also somewhat rugose. The carpopodites 

 are slightly rugose above and armed at the inner angle 

 with a strong spine, that, especially in the smaller cheli- 

 pede, is somewhat flattened and compressed; 

 beneath this spine a much smaller one is seen. The hori- 

 zontal length of the larger hand measures two thirds the 

 width of the carapace, the fingers are about just as long 

 as the palm and the latter is almost just as high at the 

 articulation as long. The outer surface of the palm is co- 

 vered with little salient , transverse rugosities ; on the 

 upper and on the lower margin flattened granules, not at 

 all prominent, are found, but the granules as well as the 

 rugosities are visible to the naked eye. The pointed fin- 

 gers cannot be brought into complete contact, but leave 

 a narrow interspace when closed ; they resemble those of 

 Pot. sinuatifrons, presenting the same longitudinal grooves 

 and rows of puncta ; they are for the rest smooth, the 

 dactylus appears only indistinctly granular at the base. The 

 fingers show several teeth , that are small, obtuse and 

 unequal. The other chela agrees with the described one, 

 but the fingers are distinctly somewhat longer than 

 the palm. 



The ambulatory legs are also similar to those of Pot. 

 sinuatifrons. They are of moderate length , so e. g. are 

 those of the antepenultimate pair one third longer than 

 the carapace is broad. The meropodites are rather slender, 

 so are those of that pair almost 4-times as long as broad, 

 and the following joints are also slender, the propodites 

 of this pair being about 3-times as long as broad. The 

 meropodites carry transverse rugosities on their outer sur- 

 face near the upper margin, that is quite unarmed at its 



iN^otes from tlie Ley den Museum, Vol. X!XI. 



7 



