434 PROCEEDINGS OF THE ACADEMY OF 



Thompsoni, and at the October meeting he exhibited specimens of 

 the plant, and suggested a method of preventing its development, 

 which, if adopted, may economize expenditure to the amount of 

 thousands of dollars, for our own and other municipal authorities. 

 Finally, at our last meeting, several short communications were 

 brought forward, among the most important of which were Dr, 

 Tyson's exhibition and account of Echinococci, and Dr. J. H. 

 McQuillen's observations on a remarkable case of Dilaceration of 

 the Crown of an Incisor Tooth. 



All of which is respectfully submitted, 



Jos. G. Richardson, Recorder. 



REPORT OF CONSERVATOR OF COXCHOLOGICAL 



SECTION. 



The Conservator of the Conchological Section respectfull}- re- 

 ports that the donations to the Cabinet, during the past year, have 

 been as follows : 



Beadle, Rev. E. R. Nannina raregutlata, Mous., from Insula 



Adenon and Ario2:)anta intumescens, Blandf., from Mahlablish- 



var, India. 

 Berendt Expedition, Subscribers to. Five species of land and 



fresh-water shells from Central America. 

 Ennis, J. Pecten tenuicostata, Migh., from Mt. Desert Island, 



Maine. 

 Lea, I. Eight species of Unio, and two species from Georgia and 



S. Carolina. 



In addition the following have been presented to the Aca- 

 deni}' : 



Dall, W. H. Types of three new species of Mollusca from Cali- 

 fornia. 



Eckstein, Dr. H. C. One hundred and twentj'-eight species of 

 shells from the South Pacific Islands. 



Gabb, W. M. Fifty -two species of land shells from San Domingo. 



Garrett, And. Twent3'-six species of Cyprsea^ from the A'iti 

 Jslands. Fort}' species of Neritidoe and Neretinidse., from the 

 Viti Islands. Seven hundred and twenty-five species of Marine 

 and Terrestrial Mollusca principally from the Viti Islands, 



