With Ten Plates, Roifal Ato, bs. 
CONTRIBUTIONS TO THE KNOWLEDGE OF RHABDOPLEURA 
AND AMPHIOXUS. 
By Sir RAV LANKESTER, K.C.B., M.A., LL.l)., F.R.S. 
London: .1. & A. Churchill, 7 Great Marlborough Street. 
Quarterly Journal of Microscopical 
Science. 
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