CARCINOLOGICAL STUDIES, 81 



first , and projects more laterally , because , as I have said , 

 the anterior half of the lateral margins runs slightly outward 

 instead of inward. The third antero-lateral tooth is very 

 small , acute and dentiform. The eye-peduucles measure 

 about a third of the greatest width of the cephalothorax 

 and scarcely reach to the external orbital angle. The in- 

 ferior margin of the orbits is delicately crenu- 

 late both in the male and in the female. 



The anterior legs of the male are of equal size. The 

 upper margin and the external margin of the triquetrous 

 arms are finely denticulate and the external surface is 

 minutely granular. The under surface of the arms is thickly 

 clothed with a patch of hair. The wrist has the upper 

 surface smooth for the naked eye. The hands (fig. 10) 

 are quite as long as the length of the cephalothorax and 

 appear to be smooth , but their outer surface proves to be 

 very minutely granular , when seen under a magnifying-glass 

 of strong power. The upper margin as well as the under 

 margin of the palm are obtuse, no longitudinal crest exists 

 on the outer surface close to the under margin and the 

 inner surface, which is unarmed , is thickly clothed with 

 hair on its distal half and at the base of the fingers. The 

 fingers measure almost two thirds of the length of the 

 palm. The lower margin of the immobile finger forms a 

 continuous straight line with the lower margin of the 

 palm , the index being not at all deflexed. The outer surface 

 of the immobile finger is flattened at the base and presents a 

 minutely granulated , longitudinal line which proceeds near 

 the lower margin to the end of the finger; the inner 

 margin is armed with a row of fifteen or sixteen small 

 teeth, of which three or four, which lie in the middle of 

 the row, are a little larger than the others. The mobile 

 finger appears also minutely granular, especially on the 

 upper margin, under a magnifying-glass; the inner mar- 

 gin is, ioitnediately before the middle, armed with a 

 rather broad, prominent tooth, the inner margin 

 of which presents six or seven denticles and just before 



Notes from the Leyden Museum, Vol. XII. 



6 



