REPORT OF NATIONAL MUSEUM, 1920, 89 



Dr. William II. Dall, honorary curator of mollusks, has completed 

 his "Annotated List of the recent Brachiopoda in the collection of 

 the United States National Museum with descriptions of thirty- 

 three new forms/' The summary of the North West coast marine 

 mollusk fauna from the Polar Sea to San Diego, California, was 

 finished and the galley proof read. A report on the marine mollusk 

 fauna of the Hawaiian Islands is begun and in progress. Mr. John 

 B. Henderson, regent of the Smithsonian Institution, has continued 

 his studies of the East American Mollusca, devoting the greater 

 part of each day to assembling in one large study series the large 

 accumulation of mollusks from the West Atlantic received by the 

 Museum during the last thirty years, uniting these with the original 

 East Coast collection. This is a continuation of work begun last year, 

 and is still in progress. His monograph of the Western Atlantic 

 Scaphopoda is now going through press and will be issued shortly. 

 He is also joint author with Dr. Paul Bartsch, of a new classification 

 of the American " Cyclostomidae," now in press. He has likewise 

 cooperated with the curator in the continuation of the work on a 

 report on the mollusk fauna of the Beaufort, North Carolina region, 

 for the U. S. Bureau of Fisheries. He and Dr. Carlos de la Torre, 

 of Havana, Cuba, are co-authors in a report on new operculate land- 

 shells of Cuba, which is about to go to press. He has made slight 

 progress in his monograph of the American Tectibranchs. Dr. Mary 

 -J. Rathbun has completed a report on the brachyuran crabs of the 

 American Museum of Natural History Congo Expedition, 1000-1915, 

 which numbers nearly 3,000 specimens. She has also completed a 

 report on the brachyuran crabs of the expedition by the State Uni- 

 versity of Iowa to Barbados and Antigua in 1918, and has continued 

 work on the bulletin on the spider crabs of America. She is prepar- 

 ing a report on the brachyrhynchous crabs obtained by the Australian 

 Fisheries Investigation ship Endeavour,the second paper in the series 

 on decapods, to be published by the Commonwealth of Australia. 

 The curator, in addition to the time given to executive work, has 

 been engaged in the preparation of reports on various groups of 

 mollusks, as shown by his bibliography. In addition several other 

 papers are now going through press. He has also continued his 

 researches on the Nudibranch mollusks of the Philippines; also, 

 on another monograph of the Caecidae of the West Coast of America. 

 He likewise continued his work upon the marine mollusks of the 

 Mazatlanic fauna! area. The report on the mollusks of the region 

 about Beaufort, North Carolina, is nearly completed. Continued 

 observations and studies in connection with his Cerion experiments 

 have been made. He lias also begun a comprehensive survey of the 

 American shipworms. 



