CONTENTS OF VOL II. 



ERRATA. 



In No. 2, Vol. II, of this Bulletin the following corrections 

 are to be made: 



On page 83, line 21. In place of spino-occipital read 

 occipito-spinal. 



On page 84, line 4. In place of spino-occipital read occipito- 

 spinal. 



On page 85, lines 2, 6, 24, 26, 27, 32, 35. In place of spino- 

 occipital read occipito-spinal. 



TJie Embryology of the Apteiygota . . . 69-76 



III. Wm. E. Ritter. 



A Feiv Facts Concerning the Relationships 

 and Reproduction of Some Bering Sea 

 Tunicates 77-8 1 



IV. Edward Phelps Allis, Jr. 



The^ Homologies of the Occipital and First 



Spinal Netves of Aniia and Teleosts . . ^3-97 



