REPORT OF NATIONAL MUSEUM, 1&22. 73 



count all the specimens individually. Except for the mammals, 

 where an actual count has been made, the figures presented are based 

 upon previous estimates, the numbers received during the year being- 

 added and the specimens disposed of by gifts and exchange or other- 

 wise expended being deducted. It should be noted that this census 

 does not include the collections of mammals and birds in the custody 

 of the Biological Survey. 



Duplicates have not been segregated in several of the divisions for 

 various reasons, but more particularly because a large amount of ma- 

 terial has yet to be worked over monographically, so as to make it 

 safe to deplete the series. It has therefore been considered the better 

 plan only to list the number of duplicates actually segregated. It 

 may be further noted that the figures for the division of plants are 

 exclusive of the lower cryptogams. In the following table the 

 figures in parentheses indicate the number of duplicates included in 

 the total: 



Division : 



Mammals 79, 584 



„ , (skins, skeletons, and alcoholics 234,155 (S. 993) 



Birds {eggs 80,253 



Reptiles 75,206 



Fishes 6S5, 320 (25, 000) 



Insects 2, 338, 500 



Marine invertebrates 712,000 (9,300) 



Mollusks 1, 483, 757 (12, 000) 



Echinoderms 157,000 (50,000) 



Plants 1,100,000 (10,000) 



Total 0, 945, 775 (115, 293) 



