IFith Ten Plates, liot/al Ato, Ss-. 



CONTRIBUTIONS TO THE KNOWLEDGE OF RHABDOPLEURA 

 AND AMPHIOXUS. 



By E. HAY LANKESTER, M.A., LL.D., F.R.S, 

 London : J. & A. ChuechilIi, 7 Great Marlborough Street. 



Quarterly Journal of Microscopical 



Science. 



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BACK NUMBERS of the Jouenal, which remain in prints are 

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The issue of Supplement Numbers being found inconvenient, 

 and there being often in the Editor's hands an accumulation of 

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