CONTENTS. 



No. 1. — Studies from the Newport Marine Laboratory. — 

 XX. On the Development of the Calcareous Plates of 

 Asterias. By J. W. Fewkes. (5 Plates.) July, 1888 . 1 



No. 2. — On the Lateral Canal System of the Selachia and 

 Holocephala. By S. Garman. (53 Plates.) September, 

 1888 57 



No. 3. — The Coral Reefs of the Hawaiian Islands. By A. 

 Agassiz. (13 Plates.) April, 1889 121 



No. 4. — Studies on the Primitive Axial Segmentation of the 

 Chick. By Julia B. Platt. (2 Plates.) July, 1889 . . 171 



No. 5. — The Morpholog}^ of the Carotids, based on a Study 

 of the Blood-vessels of Chlamydoselachus anguineus Gar- 

 man. By H. Ayers. (1 Plate.) October, 1889 .... 191 



No. 6. — Cave Animals from Southwestern Missouri. By S. 

 Garman. (2 Plates.) December, 1889 . 225 



