552 SMITHSONIAN MISCELLANEOUS COLLECTIONS [VOL. 50 



PUBLICATIONS OF THE SMITHSONIAN INSTITUTION 

 Continued from List in Quarterly Issue, Vol. iv, Part 3 



No. Title. Series. Price. 



1780 Smithsonian Miscellaneous Collections, Quarterly 



Issue, Vol. IV, Part 4 (containing Nos. 1781-1788) . M.C. L .50 



1781 Arnold, Ralph. New and Characteristic Species of 



Fossil Mollusks from the Oil-bearing Tertiary For- 

 mations of Santa Barbara County, California. 

 {Quarterly Issue) 1907 M.C. L . 10 



1782 True, Frederick W. On the Occurrence of Remains 



of Fossil Cetaceans of the Genus Schisodelphis in the 

 United States, and on Priscodelphinus (?) crass- 

 angulum Case. (Quarterly Issue) 1908 M.C. L .10 



1783 Merrill, George P. The Meteor Crater of Canyon 



Diablo, Arizona ; its History, Origin, and Associated 



Meteoric Irons. (Quarterly Issue) 1908 M.C. L . 15 



1784 Dall, William H. Notes on Gonidea angulata Lea, 



a Fresh-water Bivalve, with Description of a New 



Variety. (Quarterly Issue) 1908 M.C. L .05 



1785 Dall, William H. A New Species of Cavolina, with 



Notes on Other Pteropods. (Quarterly Issue) 1908.. M.C. L .05 



1786 Britton, N. L, and Rose, J. N. A Preliminary Treat- 



ment of the Opuntioideae of North America. (Quar- 

 terly Issue) 1908 M.C. L . 10 



1787 Knab, Frederick. Observations on the Mosquitoes of 



Saskatchewan. (Quarterly Issue) 1908 M.C. L .05 



1788 Notes to Quarterly Issue, Vol. IV, Part 4 M.C. L .05 



1789 Smithsonian Miscellaneous Collections (Quarterly 



Issue, Vol. IV), Vol. L. 1908 M.C. L 



1790 Annual Report of the Smithsonian Institution for 



year ending June 30, 1907, Part 2, National Mu- 

 seum M.R. 1907. 



