32 ANNUAL REPORT OF THE 



REPORT ON THE CRUSTACEA AND MOLLUSCA. 



By Walter Faxon. 



Specimens of Crustacea have been received during the year from 

 the following sources: — 



Dr. Thomas Barbour, living specimens of Cambarus bartonii 

 and C. robustus from St. Lawrence Co., N. Y., and a small collection 

 from Cuba; Mr. W. F. Clapp, miscellaneous collections from 

 Rockland, Me., George's Bank, Brown's Island, Plymouth, Mass., 

 and off Wellfleet, Mass. ; Mrs. Nellie A. Clapp, Carcinides maenas 

 from Duxbury, Mass.; Mr. H. B. Dulin, Carcinides maenas from 

 Kettle Island, Magnolia, Mass.; Mr. W. P. Hay, Cambarus 

 ortmanni Williamson, from Bluffton, Ind., one paratype; Mr. 

 Bernhard Hoffmann, Cambarus immunis spinirostris from Stock- 

 bridge, Mass.; Mr. W. M. Mann, Epilobocera haytensis from 

 Manneville, Haiti; Mr. Geo. Nelson, miscellaneous specimens 

 from Swan Island, Caribbean Sea; Mr. J. B. Norton, Cambarus 

 immunis spinirostris from Walden Pond, Concord, Mass.; Dr. 

 Roland Thaxter, Carcinides maenas from Kittery, Me.; Prof. 

 Carlos de la Torre, Palaemonetes cubensis from Prov. Pinar del 

 Rio, Cuba; U. S. National Museum, seven species (18 speci- 

 mens) of crayfishes. 



All of the Astacidae which have accumulated in the U. S. Na- 

 tional Museum since the publication of my paper on these animals 

 in the Proceedings of the United States National Museum, 1898, 

 20, have been sent to me for identification and returned to Wash- 

 ington. Together with the material recently acquired by this 

 Museum they form the subject of a memoir completed some time 

 since, but delayed in publication by the slow execution of the 

 plates. 



Mr. W. F. Clapp records the following accessions : — 



Miss Mary R. Rotch, the James Arnold collection, containing 

 over 2,100 species; Dr. Carlos de la Torre, 127 species from Cuba, 

 including several cotypes; Mr. Olaf Ny lander, 30 species from 

 Aroostook co., Me.; the U. S. Bureau of Fisheries, 20 species of 

 Pteropoda, Nudibranchiata, and Cephalopoda, and a few speci- 



