EEPORT OF NATIONAL MUSEUM, 1912. 47 



and classification of the collections. Reports were completed and 

 submitted by Dr. W. T. Caiman, of the British Museum of Natural 

 History, on the cumacea; by Prof. E. L. Bouvier, of the Museum 

 of Xaturnl History, Paris, on the family Atyidse of crustaceans; 

 by Dr. J. H. Gerould, of Dartmouth College, on the North 

 Atlantic Sipunculoidea ; by Dr. A. S. Pearse, of the University of 

 Wisconsin, on certain amphipods of the Gulf of Mexico ; and by Dr. 

 C. Dwight Marsh, of the Department of Agriculture, on free-swim- 

 ming copepods from fresh-water plankton. Investigations were be- 

 ing continued, with reports in various stages of preparation, by Dr. 

 C. B. Wilson, of the State Normal School, Westfield, Mass., on the 

 parasitic copepods, of which several new species were described dur- 

 ing the year ; by Dr. J. A. Cushman, of the Boston Society of Natural 

 History, on the foraminifera of the North Pacific, of which the third 

 part, treating of the family Lagenidse, was nearly ready; by Dr. 

 H. A. Pilsbry, of the Academy of Natural Sciences, Philadelphia, on 

 the sessile cirripedia ; by Dr. H. J. Hansen, of the Zoological Museum, 

 Copenhagen, Denmark, on the Euphausiacea ; by Dr. Th. Mortensen, 

 of the same museum, on certain echinoids; by Dr. N. Annandale, of 

 the Indian Museum, Calcutta, on fresh-water sponges; by Dr. H. 

 Coutiere, of the Ecole Superieure de Pharmacie, Paris, on the Cran- 

 gonidse; by Dr. J. W. Spengel, of Giessen, Germany, on the Echi- 

 uroidea; by Dr. H. B. Bigelow, of the Museum of Comparative 

 Zoology of Harvard University, on medusae of the Pacific Ocean ; by 

 Dr. W. K. Fisher, of Stanford University, on the starfishes of the 

 Pacific Ocean; by Prof. C. C. Nutting, of the State University of 

 Iowa, on hydroids; and by Dr. R. C. Osburn, of Barnard College, 

 New York, on the bryozoa of the north Atlantic Ocean. Studies 

 were begun during the year by Dr. R. Koehler, of Lyon, France, on 

 the ophiurans of the West Indies ; by Dr. L. Doderlein, of Strassburg, 

 Germany, on the astrophytons of the Pacific Ocean; by Dr. W. M. 

 Tattersall, of the Manchester Museum, England, on the Mysidacea ; 

 by Mr. Joseph Pearson, of Colombo Museum, Ceylon, on the holo- 

 thurians of the Indo-Pacific Ocean; and by Dr. Walter Faxon, of 

 the Museum of Comparative Zoology of Harvard University, on 

 crayfishes. 



Plants. — The principal accessions of the year were obtained by 

 transfer from the Bureau of Plant Industry of the Department of 

 Agriculture, and consisted of two collections made in connection with 

 the biological survey of the Panama Canal Zone, one comprising 

 about 7,000 specimens gathered by Mr. PI. Pittier, the other about 

 6,200 specimens, mostly grasses, assembled by Mr. A. S. Hitchcock. 

 This material, coming from a region which has been but little ex- 

 plored, at least in recent years, is sufficiently comprehensive to furnish 

 the basis for a fair beginning in the preparation of a flora of Panama. 



