CONTENTS 



1. Fewkes, J. Walter. Archeplogical investigations in New Mex- 



ico, Colorado, and Utah, May, 1917. 38 pp., 14 pis, (Pub. 

 no. 2442.) 



2. McIndoo, N. E. Recognition among insects, April 30, 1917. 



78 pp, (Pub. no. 2443.) 



3. Clayton, H, Helm. Effect of short period variation of solar 



radiation on the earth's atmosphere. May, 1917. 18 pp., 

 8 charts. (Pub, no. 2446.) 



4. Thomas, Oldfield. Preliminary diagnoses of new mammals 



obtained by the Yale-National Geographic Society Peruvian 

 expedition. April 10, 1917. 3 pp. (Pub. no. 2447.) 



5. Standley, Paul C, New East African plants, June 23, 1917. 



8 pp. (Pub, no, 2477,) 

 '6, Candolle, C. de, Meliaceae Centrali-Americanae et Panamenses. 

 June 23, 1917. 8 pp. (Pub. no, 2479,) 



7, Richmond, Charles W, Descriptions of two new birds from 



Haiti, July 12, 1917, 3 pp. (Pub. no, 2481.) 



8, Fowle, F, E, Water-vapor transparency to low-temperature 



radiation. October 27, 1917, 68 pp, (Pub, no, 2484,) 



9, Miller, Gerrit S. A new river-dolphin from China. March 30, 



1918. 12 pp., 13 pis. (Pub. no, 2486.) 



10. Hollister, N, New rodents from British East Africa, January 



16, 1918, 3 pp, (Pub. no. 2489.) 



11. Howe, Marshall A. The marine algae and marine- sperma- 



tophytes of the Tomas Barrera expedition to Cuba, April 9, 

 1918. ,13 pp. (Pub, no. 2491,) 



12. Exploration and field-work of the Smithsonian Institution in 



1917. June, 1918. 133 pp. (Pub. no. 2492.) 



(v) 



