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, pl. 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 Pyramidula 
alternata and two Polygyra albolabris, one dead and one living. 
