On Megalocypris princeps. 13 



several chitincms stripes, and carrying in front 2 short 

 bristles. The terminal part, which as a rule, forms a geni- 

 culate bend with the basal one, is composed of 4 distinctly 

 defined joints rapidly diminishing in size distally, and is 

 generally turned backwards, though able to move for- 

 wards. Its 1st joint is rather large, equalling in length 

 the 2 succeeding ones combined, and is ciliated along the 

 inferior edge, carrying moreover at the end below a short 

 bristle. It is very movably connected with the succeeding 

 joint, whereas the articulation between the latter and the 

 3rd joint seems to be much firmer. Both these joints, like 

 the 1st, have at the end below a short seta. The last joint 

 is very small, and carries on the tip a very long and 

 slightly curved claw turned anteriorly, and very finely 

 denticulated along the concave edge. At the base of the 

 claw 2 very small hair-like bristles are seen issuing from 

 the terminal joint. 



The posterior legs (fig. 15) are much more slender 

 than the anterior, and, as stated above, reflexed, with their 

 outer part more or less turned upwards. The basal part is 

 apparently composed of a short proximal, and a longer 

 distal joint, the latter carrying 3 slender setæ, 2 of which 

 issue from the end, the 3rd from a separate ledge of the 

 lower edge. The terminal part, which forms with the 

 basal one a strong elbow-like bend, is apparently only com- 

 posed of 2 joints, the 1st of which is narrow linear, with 

 a slender seta at the end behind, and with the anterior 

 edge slightly serrate. The 2nd joint is much smaller, very 

 narrow, and provided somewhat beyond the middle of the 

 hind edge with a short seta. At the tip a small curved 

 claw and a slender seta, pointing in opposite directions, are 

 attached. On a closer examination with a higher magnifying 



