REPORT OF DEPARTMENT OF MARINE INVERTEBRATES. 195 



as Indicated in the table given below. Bach entry indicates a separate 

 package (jar, bottle, homeopathic vial, box, or tank), containing a sin- 

 gle species, although the same species may be duplicated several times 

 by being represented by specimens from different localities. The en- 

 tries are not limited to identified specimens, but all collections are cat- 

 alogued as soon as sorted, in order that an accurate account may be 

 kept of the vast accumulation of materials which now more than till 

 the Storage space allotted to them. A card catalogue is also kept, and 

 is intended to cover all I lie entries in the record books. In so far as 

 they refer to identified materials, the cards are arranged in systematic 

 order, permitting of easy reference to the species, while the remainder 

 are arranged serially as to the catalogue numbers, and constitute the 

 working catalogue, being more convenient for handling than the large 

 record books. 



Table xltoiciinj entr'tr* in record hooka for 1884. 



Groups. 



Enti i.-s 



to Jan. 1, 



1884. 



Entries 

 to Jan. 1, 



1885. 



Entries 

 made dur- 

 ing 1884. 





5,719 



7,500 



729 



209 



6,840 



1,115 



7,230 

 8,913 



880 



298 



8,698 



1,760 



1,511 





1,413 

 151 



Tunicates and Bryozoa 



89 

 1 858 





645 







Total 



14, 612 



20, 279 



5 667 







DISTRIBUTION OF DUPLICATES AND EXCHANGES. 



A large number of duplicate specimens have been distributed during 

 the year, mainly to institutions in the United States. In this manner 

 the Museum has been relieved of the care of much material of no 

 further use to its workers, and students elsewhere have been given the 

 benefit of its resources. Nearly all the collections sent out belonged to 

 the regular series of duplicates described in former reports and referred 

 to elsewhere in this report. These have been made up from dupli- 

 cates resulting from the explorations of the U. S. Fish Commission, 

 and are collections of great value, a large share of the species they 

 contain being recent additions to science from deep water. As has 

 been the custom hitherto, no returns have been demanded from Ameri- 

 can institutions supplied with these sets, but collections have been sent 

 to foreign countries only in exchange. Forty-eight sets belonging to 

 the regular series were sent out in 1884 to the following institutions : 



London series, containing L'25 species (sent in exchange): University 

 of Edinburgh, Edinburgh, Scotland. 



Series I T, containing about L 90 species each : State University, Bloom- 

 ington, Ind.; Rochester University, Rochester, N. Y.; Johns Hopkins 



