40 ANNUAL REPORT OF THE 



Vol. XXXVI. 



No. 1. An Atlantic " Palolo," Staurocephalus gregaricus. By A. G. Mayer. 



pp. 14. 3 Plates. June, 1900. 

 No. 2. Contributions from the Zoological Laboratory. No. 112. Some North 



American Fresh-Water Rhynehobdellidae, and their Parasites. By W. E. 



Castle, pp. 50. 8 Plates. August, 1900. 

 No. 3. Fossil Lepidosteids from the Green River Shales of Wyoming. By C. 



R. Eastman, pp. 12. 2 Plates. August, 1900. 

 No. 4. Characters and Relations of Gallinuloides, a Fossil Gallinaceous Bird 



from the Green River Shales of Wyoming. By F. A. Lucas, pp. 8. 



1 Plate. August, 1900. 



Vol. XXXVII. 

 No. 1. Descriptions of new and little known Medusae from the Western Atlantic. 



By A. G. Mayer, pp. 10. 6 Plates. June, 1900. 

 No. 2. Some Medusae from the Tortugas, Florida. By A. G. Mayer, pp. 72. 

 44 Plates. July, 1900. 



Memoirs : — 

 Vol. XXIII. 

 No. 2. Reports on an Exploration off the West Coasts of Mexico, Central and 

 South America, and off the Galapagos Islands, in charge of Alexander 

 Agassiz, by the United States Fish Commission Steamer " Albatross " dur- 

 ing 1891, Lieut. Commander Z. L. Tanner, U. S. N., Commanding. XXV. 

 The Ophiuridae. By C. F. Lutken and Th. Mortensen. pp.116. 23 Plates. 

 November, 1899. 



Vol. XXIV. 



Reports on an Exploration off the West Coasts of Mexico, Central and South 

 America, and off the Galapagos Islands in charge of Alexander Agassiz, by 

 the United States Fish Commission Steamer " Albatross," during 1891, Lieut. 

 Commander Z. L. Tanner, U. S. N., Commanding. XXVI. The Fishes. 

 By S. Garman. pp. 431. 98 Plates. December, 1899. 

 Report : — 



1898-99. pp. 21. 1 Plate. September, 1899. 



