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With Ten Flates, RoijaL 4to, 5s. 



CONTRIBUTIONS TO THE KNOWLEDGE OF RHABDOPLEURA 



AND AMPHIOXUS. 



By E. RAY LANKESTEK, M.A., LL.D., F.R.S. 

 London: J. & A. Chuechill, 7 Great Mailborougli Street. 



Quarterly Journal of Microscopical 



Science. 



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