\ Discovery Reports. Vol. XXI, pp. 235-260, Plates VII, VIII, October 1941.] 



THE ECHIURIDAE, SIPUNCULIDAE AND 



PRIAPULIDAE COLLECTED BY THE 



SHIPS OF THE DISCOVERY COMMITTEE 



DURING THE YEARS 1926 to 1937 



By 



A. C. STEPHEN, D.Sc. 



The Royal Scottish Museum, Edinburgh 



