CONTENTS OF No. 182.-New Series. 



MEMOIRS 



Maturation of the Ovum in Ecliinus esculent us. By Thomas 

 H. Bkyce, M.A., M.D. (With Plates 10— 12) . . . .177 



Studies on the Arachnid Entosternite. By R. I. Pocock. (With 

 Plates 13 and 14) 225 



On the Morphology of the Cbeilostomata. By Sidney F. Harmek, 

 Sc.D., F.B.S. (WithPlates'l5— 18) 2G3 



On the Development of Sagitta; with Notes on the Anatomy of the 

 Adult. By L. DoNCASTER. (With Plates 19— 21) . 351 



