Invertebrate Collections 65 



The exhibits in the Hall of Mollusks have been kept in ex- 

 cellent condition through the services of Mr. E. H. Gugel- 

 mann. There have been no additions to the dis- 



,, „ °. play cases during the year, but the exhibits in 



Mollusks i r i 11 ft 1 



several of the wall cases have been cleaned and 



rearranged. The hall has been utilized by many inquirers 

 seeking to study the shells or identify specimens from those 

 on exhibition. On account of the arrangement of the col- 

 lection, this is readily possible for the average visitor without 

 disturbing the specimens. When more careful study is re- 

 quired, the visitor is referred to the study collection, which 

 is utilized under guidance. 



The general invertebrate collections have been under the 

 General In- efficient supervision of Dr. W. G. Van Name, 

 vertebrate The identification, cataloguing and rearrange- 



Collection ment of the echinoderm collections were com- 

 pleted. This important work, begun in the autumn of 1920, 

 occupied the first three months of 1921. 



The Rotifer Collection was completely revised and cata- 

 logued, including the recent donations of Mr. Myers. 



The invertebrates collected by the Albatross Expedition 

 of 1911, which were turned over to our department in 1920, 

 were separated and classified and various lots shipped to 

 specialists for identification. 



Many smaller accessions were separated and classified, es- 

 pecially those received from Mr. Barnum Brown from Abys- 

 sinia and Asia Minor. 



The extensive series of invertebrates obtained by the Bel- 

 gian Congo Expedition were gone over and a series of dupli- 

 cates made ready for shipment to the Belgian Government, of 

 those portions covering which publications have appeared. 

 The series includes 788 specimens from 99 species of Crusta- 

 cea, Echinoderms and Land Mollusks. 



Many requested identifications v of collections have been 

 made. This is a time-consuming matter, but one that has 

 been cheerfully undertaken to further the public usefulness 

 of the Museum. 



The classified lists of the various phyla have been revised 

 and brought up to date. 



