METAMORPHOSES OF THE CRITSTACEA. 



281 



In tlie Opossum-shrimps (Mi/sis) the young does 

 not leave the pouch of the mother until it is fully 



A 



Fifi. 7.!. /'ill nixxciiiisiilcdtiis. A, adult (after deHaan. }> i:at. m'zp) ; 

 B, ZoiBn, and C, Irss advanced ZoiBa nf a species of Prnaiix. D, 

 Naup'.ius. (B, C, and D, after Fritz Miillcr.) 



