studies on marine Oslracods 



765 



is a spine on the distal edge of the first to the seventh joints; on the first joint this spine is 

 moderately large, on the following ones it decreases gradually in strength the more distally it 

 is situated. All the joints are bare. E n d o p o d i t e (see the appended tig. 4) : This is somewhat 

 more than half the length of the exopodite; it has three joints, all of which are distinctly 

 developed. The first joint is from three to ioui' times as long as the second joint, which is some- 



Fig. CLII. — Polycope setigera n. sp., ?. — 1. l.oFL valve seen from llie sl.l.': 10.5 X. 2. Right first auleiina seen 



from inside: tlie long end Ijristles are brolcen: W, X. 3. Exopodite of ttie left second antenna seen from inside; the 



long bristles are broken, those of the 1st— 8th joints are drawn as if they were tnuisparent: S'lS >;. '.. Endopodite of 



the left second nnlonna seen from nnl-iidc: Un' long bristles are broken: 8'i8 X. ."i. Mandible: i08 v. 



