IV CONTENTS. 



Page 

 No. 10. — Notes on the Phytoplankton of Victoria Nyanza, East Africa. 

 By C. H. Ostenfeld. (2 Plates.) July, 1909 1(39 



No. II. — Reports on the Scientific Results of the Expedition to the Eastern 

 Tropical Pacific, in charge of Alexander Agassiz, by the U. S. Fish Cora- 

 mission Steamer "Albatross," from October, 1904, to March, 1905, Lieut. 

 Commander L. M. Garrett, U. S. N., Commanding. XIX. Pycnogonida. 

 By Leon J. Cole. (3 Plates.) August, 1909 183 



No. 12. — Cruise of the U. S. Fisheries Schooner "Grampus" in the Gulf 

 Stream during July, 1908, with Description of a new Medusa (Bytho- 

 tiaridae). By Henry B. Bigelow. (1 Plate.) August, 1909 .... 193 



No. 13. — Reports on the Scientific Results of the Expedition to the Eastern 

 Tropical Pacific, in charge of Alexander Agassiz, by the U. S. Fish Com- 

 mission Steamer " Albatross," from October, 1904, to March, 1905, Lieut . 

 Commander L. M. Garrett, U. S. N., Commanding. XX. Mutations in 

 Ceratidm. By Charles Atwood Kofoid. (4 Plates.) September, 1909 211 



No. 14. — Mylostomid Palatal Dental Plates. By C. R. Eastman. December, 

 1909 259 



No. 15. — Notes on the Herpetology of Jamaica. By Thomas Barbodr. 

 (2 Plates.) May, 1910 .- 271 



No. 16. — Decapod Crustaceans collected in Dutch East India and else- 

 where by Mr. Thomas Barbour in 190S-1907. By Mary J. Rathbun. 

 (6 Plates.) September, 1910 303 



No. 17. — The Echinoderms of Peru. By Hubert Lyman Clark. (14 

 Plates.) October, 1910 319 



Corrigenda. 



No. 15, page 286 and explanation to Plate 2 for Plate 2, Fig. 2, read Plate 2, Fig. 1. 

 Page 287 and explanation to Plate 2 for Plate 2, Fig. 1, read Plate 2, Fig. 2. 



