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The Journal 



OF THE 



Postal Microscopical Society. 



SEPTEMBER, 1882. 



®n tbe lEmbr^olog^ of tbe po&opbtbalmata 

 or Stalk^^E^cb Cruetacea. 



By Edward Lovett. 



AVING recently had an opportunity, extending 

 over a period of about eighteen months, of 

 examining a large number of the stalk-eyed forms 

 of Crustacea, collected from a variety of localities 

 and depths, I noticed some interesting features 

 with regard to the ova of these animals that 

 seemed worthy of attention. 



In the first place, several species were with 

 ova, whilst others from the same locality were not ; 

 secondly, some species were with ova at periods totally different 

 from the time recorded by authors on this subject ; thirdly, the 

 ova of various species were, as regards their size, out of all 

 proportion to the ova of other species; fourthly, the protective 

 power of the parent differed widely in species living under 

 various conditions; and fifthly, the ova themselves underwent 

 great changes in appearance as they approached maturity. 



As regards the first of these facts, it would appear probable that 

 many species may be double-brooded; and although I have noticed 



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