CONTENTS. 



Preface pp. v-vii 



I. Dinocystis Barroisi, n.g. et sp., Psammites du Condroz. 



[F. 38.] ' December, 1898 



Dec. IV, Vol. V, pp. 543-548, pi. XXI 

 Note on Dinocystis Barroisi. A letter by G. Dewalque. 



February, 1899 

 Dec. IV, Vol. VI, p. 94 

 The Horizon of Dinocystis Barroisi. A letter in reply. 



March, 1899 

 Dec. IV, Vol. VI, pp. 134-136 



II. Edrioaster Buchianns Forbes sp. 



[F. 43.] May, 1900 



Dec. IV, Vol. VII, pp. 193-204, pis. VIII, IX, X 



III. Lebetodiscus, n.g-. for Agelacrinites Dicksoni Billings. 



[F. 68.] December, 1908 



Dec. V, Vol. V, pp. 543-550, PL XXV 



IV. The Edrioasters of the Trenton Limestone. 



[F. 90.] March and April, 19 14 



Dec. VI, Vol. I, pp. 1 15-125, 162-171, pis. X-XIV 



V. Steganoblastns. 



[F. 91.] May, 1914 



Dec. VI, Vol. I, pp. 193-203, pi. XV 



VI. Pyrgocystis, n.g. 



[F. 93.] January and February, 1 9 1 5 



Dec. VI, Vol. II, pp. 5-12 and 49-60, pis. II, III 



VII. Morphology and Bionomics of the Edrioasteridae. 



[F. 94.] May and June, 1 9 1 5 



Dec. VI, Vol. II, pp. 211-215 ana< 259-266 

 VIII. A Comparison with the Structure of Asterozoa. 



t F - 95-] July, 1915 



Dec. VI, Vol. II, pp. 316-322 



IX. The Genetic Relations to other Echinoderms. 



[F. 96.] September, 1915 



Dec. VI, Vol. II, pp. 393-403 



Index ........ pp. ix-xii 



N.B. — The numbers in square brackets are those attached to the 

 papers in the privately issued List of my Scientific Writings. 



