CONTENTS 



1. Strong, William Duncan; Kidder. .Vlfred, II; and Paul, 



A. J. Drexel, Jr. Preliminary report on the Smithsonian 

 Institution- Harvard University archeological expedition to 

 northwestern Honduras, 1936. 129 pp., 16 pis., 32 figs., 

 Jan. 17, 1938. (Publ. 3445.) 



2. Johnston, Earl S. Plant growth in relation to wave-length 



balance. 18 pp., 4 pis., Jan. 12, 1938. (Publ. 3446.) 



3. Resser, Charles Elmer. Middle Cambrian fossils from Pend 



Oreille Lake, Idaho. 12 pp., i pi., Jan. 3, 1938. (Publ. 



3447-) 



4. ScHMiTT, John B. The feeding mechanism of adult Lepidoptera. 



28 pp., 12 figs., Jan. 10, 1938. (Publ. 3448.) 



5. Stirling, M. W. Three pictographic autobiographies of Sitting 



Bull. 57 pp., 46 pis., July 22, 1938. (Publ. 3482.) 



6. Snodgrass, R. E. Evolution of the Annelida, Onychophora, and 



Arthropoda. 159 pp., 54 figs., Aug. 23, 1938. (Publ. 3483.) 



7. Wedel, Waldo R. The direct-historical approach in Pawnee 



archeology. 21 pp., 6 pis., Oct. 19, 1938. (Publ. 3484.) 



8. Bush NELL, David I., Jr. Drawings by George Gibbs in the Far 



Northwest, 1849-1851. 28 pp., 18 pis., 4 figs., Dec. 30, 1938. 

 (Publ. 3485.) 



9. Deignan, H. G. a new nuthatch from Yunnan. 2 pp., Oct. 10, 



1938. (Publ. 3486.) 



10. Resser, Charles Elmer. Fourth contribution to nomenclature 



of Cambrian fossils. 43 pp., Dec. 17, 1938. (Publ. 3487.) 



11. Weintraub, Robert L. An assay method for growth-promoting 



substances utilizing straight growth of the Avena coleoptile. 

 10 pp., I pi., Dec. 31, 1938. (Publ. 3488.) 



12. Resser, Charles Elmer. The Spence shale and its fauna. 



29 pp., 6 pis., Jan. 20, 1939. (Publ. 3490.) 



(v) 



