CONTENTS. 



Page 



No. 1. — The parasitic Hymenoptera of the Tertiary of Florissant, Colo- 

 rado. By Charles T. Brues. (1 plate). January, 1910 .... 1 



No. 2. — Some West African amphibians. By Thomas Barbour. (2 

 plates). March, 1911 127 



No. 3. — Alexander Agassiz: his life and scientific work. By Sir John 

 Murray. March, 1911 137 



No. 4. — The genus Blakiaster Perrier. By Walter K. Fisher. (2 

 plates). March, 1911 159 



No. 5. — Ants collected in Grenada, W. I. by Mr. C. T. Brues. By 

 William Morton Wheeler. May, 1911 165 



No. 6. — Mammals of the West Indies. By Glover M. Allen. July, 

 1911 173 



No. 7. — Reports on the scientific results of the expedition to the Eastern 

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

 Commission Steamer " Albattross," from October, 1904, to March, 1905, 

 Lieut. Commander L. M. Garrett, U. S. N., Commanding. XXII. 

 New genera and species of dinoflagella'tes. By Charles Atwood 

 Kofoid and Josephine Rigden Michener. August, 1911 . . . 265 



No. 8. — A new species of Peripatus from Grenada, with observations on 

 other species of the genus. By Charles T. Brues. (2 plates). 

 August, 1911 303 



No. 9. — Bats from British East Africa. By Glover M. Allen. De- 

 cember, 1911 319 



No. 10. — Reports on the scientific results of the expedition to the East- 

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

 Commission Steamer "Albatross," from October, 1904, to March, 

 1905, Lieut. Commander L. M. Garrett, U. S. N., commanding. 

 XXIV. A peculiar form of schizogony in Gonyaulax. By Charles 

 Atwood Kofoid and E. Josephine Rigden. (2 plates). -February, 

 1912 333 



No. 11. — Two new species of Ascodipteron. By Frederich Muir. (3 

 plates). April, 1912 349 



No. 12. — Reports on the scientific results of the expedition to the East- 

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

 Commission Steamer "Albatross", from October, 1904, to March, 1905, 

 Lieut. Commander L. M. Garrett, U. S. N., commanding. XXVI. 

 The ctenophores. By Henry B. Bigelow. (2 plates). April, 1912 367 



No. 13. — The Geophiloidea of the Southeastern States. By Ralph V. 

 Chamberlin. (3 plates). April, 1912 405 



