THE NAUTILUS. 59 



edgment of his untiring work with, and published articles on, 

 the Olividae, as well as for the kindly interest he has taken in 

 my own collection of Oliva, and the assistance given me in 

 identifying specimens. 



This variety is figured by Marrat in Sowerby's Thesaurus 

 Conchyliorum, Vol. IV, pi. 7, f. 110. It is represented in my 

 collection by six specimens of which one, no. 1652, has to be 

 selected as the type. 



COLLECTING IN THE VICINITY OF NEWARK, NEW JERSEY. 



BY FRED TABLEMAN. 



During 1917-1918 I decided to study the molluscan fauna in 

 the vicinity of Newark, N. J. Limiting myself to twenty cents 

 car fare for each trip I started to see what I could find within 

 this area. 



Most of the work was done in Essex County, in one instance 

 within walking distance from my home. Visiting the Newark 

 Meadows I found a station for Polygyra thyroides by seeing some 

 dead shells. I looked for live specimens but could not find any 

 owing to the density of the underbrush and flies. Going later 

 when they were hibernating I collected about 150 and could 

 have gotten more. They live under debris that is overgrown 

 with the balloon- vine on which I believe they feed. This 

 station has been destroyed by the opening of the Port Newark 

 Terminal. 



The next place visited was Great Notch Brook, Upper Mont- 

 clair. On this brook is a small pond formed by a dam at the 

 head of which in a marshy place I found Lymnaea palustris in 

 great quantities, and also one specimen of Pseudosuccinea colum- 

 ella. I was fishing at the time and ran short of bait, so turn- 

 ing over a rotten log I got not only bait but a nice lot of Pyra- 

 midula alternata, which are now in my collection. Going to the 

 same place later in the season and exploring one of the moun- 

 tains as far as possible, I obtained a few small Pyramidida 

 alternata and two Polygyra alholabris, one dead and one living. 



