CONTENTS OF VOLUME 34. 
PAGE. 
No. 1. — A new pteropod from New England. B}^ C. H. Danforth. 
(4 plates.) December, 1907 ........ 1 
No. 2. — Foraminiferaof the Woods Hole region. By Joseph A. Cush- 
M.\N. (1 plate.) July, 1908 22 
No. 3. — Camarophorella, a Mississippian Meristelloid brachiopod. By 
Jesse E. Hyde. (5 plates.) September, 1908 .... 35 
No. 4. — Pj'ramidellidae of New England and the adjacent region. By 
Paul Bartsch. (4 plates.) February, 1909 .... 67 
No. 5. — New and little known Tipulidae. By Charles W. Johnson. 
(2 plates.) April, 1909 . . . . " 115 
No. 6. — A geological excursion in the Grand Canon district. By 
Douglas Wilson Johnson. (6 plates.) May, 1909 . . . 135 
No. 7. — Contributions from the Gray Herbarium of Harvard Uni- 
versity. New Series. — No. XXXVII. Flora of the islands of 
Margarita and Coche, Venezuela. By John Robert Johnston, 
M. S. (S plates.) June, 1909 . ' 163 
No. 8. — An early stage of Acmaea. By Edward S. Morse. Februarj^, 
1910 313 
No. 9. — A new Araucarian genus from the Triassic. By Edward C. 
Jeffrey. (2 plates.) July, 1910 325 
No. 10 — A new Prepinus from Martha's Vineyard. By Edward C. 
Jeffrey (1 plate.) July, 1910 333 
No. 11. — Compound ascidians of the coasts of New England and neigh- 
boring British Provinces. By Willard G. Van Name, Ph.D. 
(6 plates.) September, 1910 339 
No. 12. — The Sutton Jurassic of the Vancouver Group, Vancouver Is- 
land. By C. H. Clapp and H. W. Shimer. (3 plates.) January, 
1911 , . 425 
No. 13. — Simple ascidians of the coasts of New England and neighboring 
British Provinces. By Will.\rd G. Van Name, Ph.D. (31 plates.) 
August, 1912 439 
