28 REPORT OF NATIONAL MUSEUM, 1901. 



studios on the Naiades, which he is engaged in monographing, and 

 completed three short papers on these fresh-water mussels. The 

 Pacific Pyramidellidse were the principal subject of the investigations 

 of Mr. Paul Bartsch. 



Besides his studies on the crustacean family Galatheida?, begun some 

 time ago, Dr. .lames E. Benedict reported on the Anomouran crusta- 

 ceans of the Fish Commission expedition of 1899 to Porto Rico and 

 published papers descriptive of four new species of the symmetrical 

 Paguridse, and of the hermit crab Pagurus brrnhardus and its allies. 

 The work completed by Miss M. J. Kathbun included a synopsis of 

 the Grapsoid crabs of North America, a report on the Decapod and 

 Stomatopod crustaceans collected by the Branner-Agassiz expedition 

 to Brazil, keys to the various groups of North American crabs, a 

 report on the Brachyuran and Macruran crustaceans collected by 

 the Leland Stanford Junior University expedition of 1898-99 to the 

 Galapagos Islands, and a report on the crustaceans of the same 

 groups collected in Porto Rican waters by the Fish Commission expe- 

 dition of L899. In reporting upon the Decapod crustaceans obtained 

 by the Harriman Alaskan expedition of 1899, Miss Rathbun has 

 undertaken to prepare a complete review of the Decapods of the west 

 coast of North America based upon all the material from that region 

 now in the Museum. Miss Harriet Richardson, collaborator in the 

 Division of Marine Invertebrates, has reported on the Isopod crusta- 

 eeans of the Stanford University and the Branner-Agassiz expeditions 

 above mentioned, and has published a key to the Isopods of the east 

 coast of North America. 



Of the insects collected on the Harriman Alaskan expedition of L899, 

 many of the groups were worked up by assistants in the Division of 

 Insects of the Museum, as follows: The Dipteraby Mr. Coquillett, the 

 Coleoptera and Psyllidas by Mr. Schwarz, the Hymenoptera by Mr. 

 Ashmead, the Lepidoptera by Dr. Dyar (with the assistance of several 

 specialists), the Arachnida and Neuroptera by Mr. Banks, the Myria- 

 poda by Professor Cook, and the Odonata by Mr. Currie. Of material 

 collected at the Galapagos Islands by Mr. R. E. Snodgrass, Mr. Banks 

 has reported upon the Arachnida, Mr. Ashmead upon the Hymenop- 

 tera. Mr. Coquillett upon the Diptera, Dr. Dyar upon the Lepidoptera, 

 Mr. Currie upon the Odonata. and Mr. Heidemann, of the Depart- 

 ment of Agriculture, upon the Hemiptera. Besides the above, Mr. 

 Ashmead has conducted studies upon the Ichneumonoideaand Bombida? 

 in the general collection, has completed a report upon the Hymenoptera 

 Parasitica of the Hawaiian Islands, and has continued his researches 

 upon exotic material from Africa, Shun, Japan, Australia, and New 

 Zealand. Mr. Currie has continued work upon the Myrmeleonida-, 

 and is preparing a syhonymical card catalogue of the North American 

 Neuropteroid insects. Much progress has also been laade on catalogues 



