iv CONTENTS Ol \ <>l.i \l I XXII. 



\\'(ti>-Ki>A!.KK. J. I-".. Palmen's Organ and its I-' unction in Xymphs 

 tin- I-.plicmcridn. lleptagenia interpiinctata (Say) and f-'.cdy- 

 tirns maculipennis ( Walsh) .............................. 



\n. 5. APRIL, nil 2. 



KING, HELEN DEAN. 'I' lie . Some Amido-acids on the De- 



tneniofth<- l-'.^"* <>f Arlwciu mid f ('In.'toptfnis ......... 273 



Oi \\II:KI<^. KdiiKiM. JK. .1 JH.tcussion of Cyclops viridis Jurine 2<)i ^ 



I'l \KI.. K.\v\iiiM>. \otft OH the History of Burred Breeds of 



I'l'nltry .................................... -''7 



MON i n i \II-.KV. T. II., J k. Complete niselnir^e of Mi lot houdria from 



the Sf)en)into:oini of I'eri ptititx ........................... .>") 



\o. 6. M.\\ . i<)i2. 



l\i INKI , l ; .n\\i\ I-'.. .1 rrelimituiry Account of the I'erelopmcnt 

 oftlieApyrcnc Spermatozoa in Strombus and of the Nurse-cells 



in Litloriiin .......................................... ,U ' i 



I. il. 1. 1 1-:. K.M.i-n S. Certain Mean.: hy ichieh Starfish /v^.v .\atn- 



rally Resistant to l-'ertilization m.iy l>c Rendered \ormal and the 

 I'liysiological Conditions of this Action ................... 328 N 



I'onrtcentli Annual Report of the Marine Biological Laboratory. . . ,U7 



