iv CONTENTS. 



Page 

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

 By C. H. OsTENPELD. (2 Plates.) July, 1909 1159 



No. 11. — 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. 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 Hbnrv B. Bioelow. (1 Plate.) August, 1909 .... 19o 



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 

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



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

 1909 "-^S^ 



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

 (2 Plates.) May, 1910 '-^'l 



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

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

 (6 Plates.) September, 1910 -"^OS 



No.l7. — 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. 



