THE LEPTOSTRACA 



155 



marked. In Paranebalia (Fig. 90, A) the endopodite is long and 

 slender, projecting beyond the edges of the carapace in the natural 



A. 



ex. 



en. 



FIG. 90. 



Thoracic limbs of Leptostraca. A, Parancbalia longipcs, fifth limb. B, Nebaliclla antarctiea, 

 fourth limb. C, Nebaliopsis typica, first limb. D, the same, second limb, en, endopodite ; ep, 

 spipodite ; ex, exopodite. (A after Sars ; B, C, D after Thiele.) 



position. The exopodite is also long and narrow, and is provided, 

 Dn its outer edge, with numerous long plumose setae which suggest 

 i natatory function. The epipodite is very small. The ischio- 



