II 



APPENDAGES OF CLADOCERA 



Iii the Sididae there are six pairs of thoracic limbs, which arc 

 nearly alike in the female ; in the Bosminidae there are six pairs, 

 the first two modified for prehension, the last much reduced. 



J3r. 



Gn. 



B 



Jlr. 



l'i< : .. 12. Thoracic limits <>!' (VniM.lt: Si//inre/>li(ifiix rihihix. A, Tin- first ; B. thi 



C, tin- t.liinl ; D, tin- lit'tli. l',r. lirui-t ; /./<. fjiipmlitf : /.'', exopodite : ''//, 

 gnathobase. 



Tn the male, the lirst tli<r;i<-ic liml is iisiuilly \>\o\ idcd \\iili 

 a lon^ sensory process and a prchcnsil>lc huiik ( l ; i-s. 11, 19). 

 In the Gymnomera the liml>s ;nv cylindrical, jointed rods. 



