126 ANNUAL REPORT SMITHSONIAN INSTITUTION, 1941 



Explorations and field work of the Smithsonian Institution in 1940. 100 pp., 

 100 halftone figs. (Publ. 3631.) April 3, 1941. 



PUBLICATIONS OF THE UNITED STATES NATIONAL MUSEUM 



The editorial work of the National Museum has continued during 

 the year under the immediate direction of the editor, Paul H. Oehser. 

 There were issued 1 amiual report; title page, table of contents, and 

 index of volume 86 of the Proceedings, and 19 separate Proceedings 

 papers from volumes 87, 88, 89, and 90; 1 Bulletin, and 1 volume 

 and 1 part of a volume of Bulletin 100; and title page, table of 

 contents, and index of volume 26 of Contributions from the United 

 States National Herbarium, as follows: 



MUSEUM EEPOBT 



Report on the progress and condition of the United States National Museum 

 for the year ended June 30, 1940. iii+118 pp. January 1941. 



PKOCEBDINGS : VOLUME 86 



Title page, table of contents, and index. Pp. i-ix, 593-626. July 22, 1940. 



VOLUME 87 



No. 3077. Further studies on the opalinid ciliate infusorians and their hosts, 

 by Maynard M. Metcalf. Pp. 465-634, figs. 21-157. October 29, 1940. 



VOLUME 88 



No. 3090. Seven new species and one new genus of hydroids, mostly from 

 the Atlantic Ocean, by C. McLean Fraser. Pp. 575-580, pis. 32, 33. September 

 13, 1940. 



VOLUME 89 



No. 3093. Two new anuran amphibians from Mexico, by Edward H. Taylor. 

 Pp. 43-47, pis. 1-3. August 13, 1940. 



No. 3094. The West Ajuerican Haliotis, by Paul Bartsch. Pp. 49-58, pis. 

 6-8. August 15, 1940. 



No. 3095. Revision of the scarabaeid beetles of the phyllophagan subgenus 

 Listrochelus of the United States, with discussion of related subgenera, by Law- 

 rence W. Saylor. Pp. 59-130, figs. 1-13. November 15, 1940. 



No. 3096. The Cuban operculate land mollusks of the family Annulariidae, 

 exclusive of the subfamily Chondropominae, by Carlos de la Torre and Paul 

 Bartsch. Pp. 131-385, i-x, pis. 9-57. April 2, 1941. 



No. 3097. Seven new crayfishes of the genus Cambarus from Florida, with 

 notes on other species, by Horton H. Hobbs, Jr. Pp. 387-423, figs. 14-22. 

 November 23, 1&40. 



No. 3098. Echinoderms from Greenland collected by Capt. Robert A. Bart- 

 lett, by Austin H. Clark. Pp. 425-^33, pis. 58, 59. February 27, 1941. 



No. 3099. A revision of the keyhole urchins (Mellita), by Hubert Lyman 

 Clark. Pp. 435-444, pis. 60-62. December 12, 1940. 



No. 3100. Enrlioptodes, a remarkable new genus of Philippine cryptorhynchine 

 weevils, by Elwood C. Zimmerman. Pp. 445-448, fig. 23. November 1, 1940. 



No. 3101. The polyclad flatworms of the Atlantic coast of the United States 

 and Canada, by Libbie H. Hyman. Pp. 449-^95, figs. 24-31. February 27, 1941. 



