CONTENTS. 



Page 



No. 1. — Spermatogenesis of Calopteiius femur-rubrum and Cicada tibicen. 

 By E. V. Wilcox. (5 Plates.) May, 1895 1 



No. 2. — On tlie Early Development of Limax. By C. A. K<;foid. (8 Plates.) 

 August, 1895 33 



No. 3. — Reports on the Dredging Operations off the West Coast of Central 

 America to the Galapagos, to the West Coast of IMexico, and in the Gulf of 

 California, in charge of Alexander Agassiz, carried on by the U. S. Fish 

 Commission Steamer " Albatross," during 1891, Lieut. Z. L. Tanner, 

 U. S. N., commanding. XVII. Birds from Cocos and Malpelo Islands, 

 with notes on Petrels obtained at Sea. By C. H. Townsend. (2 colored 

 Plates.) July, 1895 119 



No. 4. — Reports on the Dredging Operations off the West Coast of Central 

 America to the Galapagos, to the West Coast of Mexico, and in the Gulf 

 of California, in charge of Alexander Agassiz, carried on by the U. S. 

 Fish Commission Steamer " Albatross," during 1891, Lieut. Z. L. Tanner, 

 U. S. N., commanding. XVIII. Die Comatuliden. Von C. Hartlaub. 

 (4 Plates.) August, 1895 .... - 127 



No. 5. — Reports on the Dredging Operations off the West Coast of Central 

 America to the Galapagos, to the West Coast of Mexico, and in the Gulf of 

 California, in charge of Alexander Agassiz, carried on by the U. S. Fish 

 Commission Steamer " Albatross," during 1891, Lieut. Z. L. Tanner, 

 U. S. N., commanding. XIX. Die Ostracoden. Von G. W. Muller. (3 

 Plates.) October, 1895 153 



No. 6. — Studies in Morphogenesis. IV. A Preliminary Catalogue of the 

 Processes concerned in Ontogeny. By C. H. Davenport. November, 1895 171 



No. 7. — The Early Embryology of Ciona intestinalis, Fleming (L.). By W. 

 E. Castle. (13 Plates.) January, 1896 . . . . \ 201 



