ARTICLES 



1'agi; 



Notes on some Upper Cretaceous Volutidce, with Descriptions of New 

 Species and a Revision of the Groups to which they belong. William 



• HealEy Dall. (Published March 7, 1907.) 1 



Notes on some Squirrels of the Sciurus Jiippurus Croup, -with Descriptions 

 of tivo Nezu Species. Marcus Ward Lyon, Jr. (Published April 



8, 1907-) 24 



A Nezu Calamarine Snake from the Philippine Islands. Leonhard 



Stejneger. (Published April 8, 1907.) 30 



Additional Notes on Mexican Plants of the Genus Ribes. J. N. Rose. 



( Published May 1, 1907. ) 32 



Morkillia, a nezv name for the Genus Chitonia, with Description of a Nezv 



Species. J. N. Rose and Joseph H. Painter. (Published May 1, 



I907-) 33 



The "Webster" Ruin in Southern Rhodesia, Africa. Edward M. Andrews. 



Plates i-iii. (Published May 1, 1907.) 35 



The Bororo Indians of Matto Grosso, Brazil. W. A. Cook. Plates iv-v. 



( Published May 1, 1907.) 48 



Cactus maxonii, a Nezv Cactus from Guatemala. J. N. Rose. Plate VI. 



(Published June 15, 1907.) 63 



On the Clasping Organs Attaching the Hind to the Fore Wings in Hymcn- 

 optera. Dr. Leo Walter. Plates vii-x. (Hodgkins Fund.) (Pub- 

 lished June 24, 1907.) 65 



Notes on Mammals Collected at Mt. Rainier, Washington. Marcus Ward 



Lyon, Jr. ( Published June 27, 1907.) 89 



The Archaic Monetary Terms of the United States. Charles A. White. 



(Published June 27, 1907.) 93 



Description of a Collection of Kootanie Plants from the Great Falls Coal 

 Field of Montana. F. H. Knowlton. Plates xi-xiv. (Published 

 June 27, 1907.) 105 



Notes 129 



Notes on a Small Collection of Mammals from the Province of Kan-Su, 

 China. Marcus Ward Lyon, Jr. Plates xv-xvi. (Published July 



9, 1907.) 133 



Descriptions of New Species of Shells, Chiefly Buccinidce, from the Dredg- 



ings of the U. S. S. "Albatross" during 1906, in the Northwestern 

 Pacific, Bering, Okhotsk, and Japanese Seas. William HealEy Dall. 



(Published July 9, 1907.) 139 



A Nezv Larch from Alaska. W. F. Wight. Plate xvii. (Published July 



10, 1907) 174 



The Lump sucker ,\ its Relationship and Habits. Theodore Gill. (Pub- 

 lished July 10, 1907.) 175 



New Plants of the Pacific Slope, with some Revisions. Charles V. Piper. 



( Published August 23, 1907. ) 195 



Contributions to the Study of the Canyon Diablo Meteorites. Georce P. 

 Merrill and Wirt Tassin. Plates xviii-xxi. (Published September 

 12, 1907.) 203 



v 



