402 OHIO STATE ACADEMY OF SCIENCE. 
Gastrodonta ligera Say. Common. 
Pyramidula alternata Say. Very large. 
: solitaria Say. Plentiful, large. 
perspectiva Say. Rare. 
2 striatella Anth. Rare. 
Helicodiscus lineatus Say. Rare. 
Succinea sp. Very large. 
Pomatiopsis lapidaria. Common. 
Four miles east of Defiance, in a sandy deposit (loess?), 
forming the north bank of the Maumee River, at the state dam, 
I have collected ,Oct. 27, 1906, the following 27 species:* 
Gastrodonta ligera Say. 
Zonitoides arboreus Say. 
‘ leviusculus Sterk1. 
Hyalina radiatula Alder. 
“ indentata Say. 
Circinaria concava Say. 
Polyg yra profunda Say. Common. 
multilineata Say. Common. 
i albolabris Say. 
3 zaleta Binney. 
‘. clausa Say. 
: mitchelliana Lea. 
" thyroides Say. 
: elevata Say. The commonest of the Polygyra. 
y fraudulenta Pilsbry. 
: inflecta Say. 
4 hirsuta Say. 
Patula solitaria Say, common. 
“ alternata Say. 
“ striatella Anthony. 
Bifidaria contracta Say. 
Succinea avara Say. 
: retusa Lea, or near. 
Physa sp. (one specimen, broken to fragments). 
Pomatiopsis lapidaria Say. Abundant. 
Pisidium compressum Prime. 
% fallax Sterk1. 
Of Unionide, fragments were common, but all too small to 
be identified. 
* Since I had chance to collect there only once, and during a short 
time, notes with respect to frequency and scarcity are insufficient. There 
is no doubt that many other species will be found in that deposit, which 
probably has a wide extension. 
