44 NEW YORK STATE MUSEUM 



by chains from the beams of the roof in the back wing of Geolog- 

 ical Hall, was taken down, entirely taken apart and thoroughly 

 cleaned by Mr Mirguet, and the skeletons of the other large 

 mammals were similarly treated after disarticulating them as 

 much as necessary. 



Although the Museum has not been officially open to the pub- 

 lic, people desiring to see the collections Avere not excluded from 

 the exhibition rooms until the dismantling of the exhibits had 

 progressed so far that too little remained to attract visitors, and 

 the spaces in the exhibition rooms were required for the storage 

 of the packed material. 



MONOGRAPH OF THE NEW YORK MOLLUSCA 



Dr H. A. Pilsbry's work upon the monograph of the New York 

 Mollusca during the year has been directed chiefly to determin- 

 ing the generic characters of numerous forms hitherto inade- 

 quately known. To this end, considerable collecting has been 

 done in the Hudson valley, Onondaga county and elsewhere to 

 procure fresh, living material for description. Some forty-five 

 figures of living mollusks have been drawn by the author, includ- 

 ing, among others, representatives of the following genera: 



Lyogyras 



Planorbis 



Zonitoides 



Amnicola 



Segmentina 



Gastrodonta 



Pomatiopsis 



Physa 



Helicodiscus 



Valvata 



Pupilla 



Vallonia 



Goniobasis 



'Bifidaria 



Arion 



Lioplax 



Vitrea 



etc., etc. 



Lymnaea 







The external anatomy of part of these genera has hitherto been 

 known in American w^orks by figures of foreign species copied 

 from European w^orks, or by very crude figures and descriptions. 

 The external soft parts of part of them have not before been fig- 

 ured or described. It is believed that the new facts brought out 

 in the course of this work on American species are ample com- 

 pensation for the time and labor spent thereon. Further work 

 has been done on the descriptive part, and a large number of 

 illustrations made, figuring all of the species Avhich have been 

 worked up. The completion of the monograph is expected next 

 year (1913). 



