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Show LIST OF THE CONTRIBUTORS, With References to the several Articles contributed by each. B A L F O U R , F. M., M.A., F.R.S., Fellow of Trinity College, Cambridge. On the Evolution of the Placenta, and on the possibility of employing the characters of the Placenta in the Classification 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. & LVIII.) 656 BARTLETT, A. D., Superintendent of the Society's Gardens. Remarks upon the Habits of the Darter (Plotus 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 Echinometrida; their Affinities and Systematic Position 410 Description of a new Species of the Genus Mespilia .... 433 468313 |