LIST 



OF THE 



CONTRIBUTORS, 



With References to the several Articles contributed by each. 



Page 

 Balfour, F. M.. M.A., F.R.S., Fellow of Trinity College, 

 Cambridge. 



"O^ 



Oa the Evolution of the Placenta, and on the possibility 

 of employing the characters of the Placenta in the Classifi- 

 cation of the Mammalia 210 



On the Development of the Skeleton of the Paired Fins of 

 Elasmobranchii, considered in relation to its Bearings on the 

 Nature of the Limbs of the Vertebrata. (Plates LVII. & 

 LVIIL) 656 



Bartlett, a. D., Superintendent of the Society's Gardens. 



Remarks upon the Habits of the Darter (^Flatus anhinga) . 247 



Bell, F. Jeffrey, M. A., F.Z.S., Professor of Comparative 

 Anatomy in King's College, London. 



Account of the Echinodermata collected during the Survey 

 of H.M.S. 'Alert' in the Straits of Magellan and on the 

 Coast of Patagonia. (Plates VIII. & IX.) 87 



Observations on the Characters of the Echinoidea. — IV. 

 The Echinometridce ; their Affinities and Systematic Position 410 



Description of a new Species of the Genus Mespilia .... 43 



O /. 



/. ^ 



9. 



