164 REPORT OF NATIONAL MUSEUM, 1893. 



A display was also made of the official entomological puldicatious of the Depart- 

 ment of Agriculture and the U. S. Entomological Commission, and some 129 frames 

 of entomological illustrations, maps, charts, and bromide enlargements. These 

 illustrations will probably become Museum property, and are for the most part in 

 standard ]\Iuseum fr.imes. They include 69 plates of illustrations of insects made up 

 from iiguros published m Prof. Riley's reports on the insects of Missouri, and from 

 illustrations from the reports of the Division of Entomology. De])artnient of Agri- 

 culture, and the U. S. Entomological Commission. Tliere were also a series of ordi- 

 nal charts representing classification and transformations ; charts of important insect 

 pests representing life history; maps showing range of leading insects; views of 

 insecticide o])erations and insect ravages, and a .series of bromide enlargements rep- 

 resenting exterior and interior views of the insectary of the Department of Agricul- 

 ture and interiors of the entomological rooms in the Department of Agriculture and 

 National Museum. 



A detailed catalogue of 121 pages, covering the entire exhibit of the Department 

 of Agriculture, was issued in midsummer as bulletin 31 of the Division of Entomology, 

 and was distributed to interested visitors during the remainder of the Exposition. 

 In it a full statement of the exhibits is given, and much information relative to them 

 which could not be well displayed with the exhibits themselves. This was supple- 

 mented by the stationing of some member of the division force at Chicago from time 

 to time during the summer to more fully explain the exliibit. 



MARINE INVERTEBRATES. 



The honorary curator, Dr. Eichaid Kathbun, on aceouitt of his respon- 

 sibilities to the U. S. Fish Connnissioii, has been unable to give more 

 than a general supervision to the work of this department during the 

 year, but substantial advances have been made. The number of acces- 

 sions have been larger than usual, one of ^vhich will add a new and 

 interesting feature to the display collection. Early in the year it again 

 became possible to open the exhibition hall to the public, and while 

 circumstances prevented any extensive improvement in the arrange- 

 ment of the cases, the chief cause of interference in that matter, the 

 preparation of material for the World's Columbian Exi)Osition, will 

 necessarily i^rove of great benetit in the liiture. The introduction of a 

 new style of rectangular glass jar for the display of alcoholic speci- 

 mens will also permit of the extension of the exhibition series in a very 

 important direction. 



Much progress has been made by Mr. Benedict and Miss Eathbun 

 in their studies of the higher crustaceans belonging to the dei)artment, 

 and several i)apers bearing upon these subjects have been completed 

 for i)ublication. Arrangements have also been made with three well- 

 known authorities in Euroi)e for the study of our large collections of 

 foraminifera, hexactinellid sponges, and deep sea deposits, and it is 

 exi)ected that the assistance of other collaborators will soon be secured, 

 a result which is greatly to be desired, in view of the large amount of 

 original material from recent explorations now contained in our store- 

 rooms. 



The accessions made to the collection number 5(5, an increase of 10 

 over last year. The most important one, from the standpoint of the 



