12 
REPORT OF THE CONCHOLOGICAL SECTION. 
The past year has been one of continuous growth in the concho- 
logical department of the museum, although no one accession of 
great size has been received. In the arrangement of the collection 
considerable progress has been made. The bivalves of the families 
Pholadidse, Teredidse, Myidse, Mactridse, Solenidse, Donacidse and 
some allied groups have been transferred from the table cases to the 
rail cases formerly occupied by minerals, and systematically arranged 
therein. To the space thus gained, the terrestrial operculates have 
been transferred, and the species rearranged according to the latest 
monographs of the several groups. The cases formerly occupied by 
the operculates, which had long since been outgrown by the increase 
of the collection, will now be utilized for displaying the Bulimulidse, 
which are at present being monographed in the Manual of Conchol- 
ogy ; the collection of Helices having extended over the cases for¬ 
merly containing Bulimi. 
Other museum work worthy of note has been a thorough revision 
of the Ampullariidse, Pinnidae, Pectunculus and Amphidromus of 
the collection, by Miss J. E. ‘Letson, and a revision of the Arionidae 
and Cylindrellidse by Mr. E. G. Vanatta and the Conservator. 
The recent and fossil Scaphopoda of our collection have been 
studied by the Director and Conservator of the Section, and the 
specimens relabelled; the results of the study being embodied in a 
monograph of the group in the Manual of Conchology. 
The entire collection of alcoholic mollusks has been transferred 
from the mollusk gallery wall cases, to cases erected in the basement 
of the new building, where they have been arranged in systematic 
order. 
The routine work of identifying specimens for correspondents has 
as usual occupied considerable time; but as in former years a large 
number of species new to science have resulted from the time thus 
expended. 1,505 lots of specimens from 72 persons have been 
received, labelled and placed in the collection during the year. A 
detailed list of accessions will be found in “ Addition to the 
Museum.” 
The officers of the Section are as follows : 
Director, 
Vice-Director, 
Recorder and Librarian, 
Corresponding Secretary, 
Treasurer , . 
. Benjamin Sharp, M. D. 
. John Ford. 
. Edw. J. Nolan, M. D. 
. Chas. W. Johnson. 
. S. Raymond Roberts. 
Respectfully submitted, 
Henry A. Pilsbry, 
Conservator. 
