I(j4 SESARMA BÜTTIKOFERI. 



arms of the anterior legs is provided with two rows of 

 hairs; the under surface also is smooth, but the somewhat 

 convex outer surface is marked with many transverse ru- 

 gosities. The acute inferior margin presents many acute 

 small teeth , the two other margins being provided with 

 acute granulations. The convex rhomboid upper surface 

 of the wrist is marked with numerous oblique rugosities. 

 The large very characteristical hands are equal on both 

 sides and very compressed] the palm projects much out- 

 wardly beyond the carpus and the dactyli are comparati- 

 vely short; the ivhole outer surface oj the hand {the immo- 

 bile finger included) is remarkably flattened , quite smooth and 

 bright like a looking-glass , though a little punctate (when 

 seen by a magnifying glass) ; the inner surface of the hands 

 on the contrary is convex and covered with scattered gra- 

 nules ; the external angle of the outer surface is rounded , 

 the upper margin sinuous, the under margin nearly straight 

 and presenting some few minute granules , that occur also 

 on the outer surface of the immobile finger; the mobile 

 finger makes an oblique angle with the upper jnargin and 

 its upper and inner surface is granulated; the internal 

 margins of the dactyli present some small teeth and the 

 horny tips are slightly excavated. 



The upper margin of the scarcely enlarged meropodites 

 of the ambulatory legs terminates into a strong spine, 

 and the propodites and dactylopodites are clothed with a 

 few short , stiff hairs along the margins. 



The specimen is of a chestnut colour and was found by 

 Mr. Biittikofer at. Fisherman lake, Liberia, Januari 1881. 



Length of carapace: 11 m.m. 



Breadth at orbital angles: IS^/g m.m. 



Breadth of the posterior margin: 6^/3 m.m. 



Breadth of front: 8 m.m. 



Height of front: I'/g m.m. 



Length of the hands: 13 m.m. 



Height of the hands near the articulation of the mobile 

 finger: 5^/.^ m.m. 



Notes troni tlie Ley<lt'n ]VInseiiiii, Vol. V. 



