262 



CRUSTACEA. 



Fin. 120. — Three later Larval .stage.s of Lucifer (after Brooks). A, younger Mysis- or Schiznpod- 

 like stage. B, older Mysis- or Schizopod-Wke stage less highly magnified. C, Afasfigofrnx 

 stage. «', first antenna ; a", second antenna ; abi-ab^^, the six jtleopoda ; c, ccphalo-thoracic 

 shield ; dr, antennal gland ; en, flagelluni, and e.r, scale of the second antenna ; nirf, 

 mandible ; m/', first maxillipede ; m/", second niaxillipede ; m.r', first maxilla ; vix", second 

 maxilla ; o, compound eye ; oc, Nauplius eye ; ol, upper lip ; r, rostrum ; 1-C, six abdominal 

 segments. 



