THE NAUTILUS. 79 
destroyed the custom house of Portland, Maine, 1854, together 
with all of Dr. Mighels’ specimens. 
In the summer of 1842 Alexander Longfellow, assisting in 
the Boundary Survey, collected in Second Eagle Lake, North 
lat. 47°, four specimens of Lymn@a ampla together with Physa 
ancillaria. This lake is also located on the east branch of Fish 
River and is at this time known under the name of Square 
Lake. The specimens collected by Mr. Longfellow and illus- 
trated and published by Dr. Mighels in Boston Journal Natural 
History, Vol. 4, page 347, pl. 16, came from Square Lake inlet. 
The great trouble to all workers in natural history is the many 
changes in the names of places. This might have been avoided 
if the map makers had not made it their business to change 
names on every new edition. Specialists and makers of new 
species in every new edition of their works are changing the 
names of the species described, each calling them Scientifically 
Correct. What to-day (1920) is called Fish River lakes was 
called in 1860 Eagle Lakes; what is now Eagle Lake was called 
Lake Winthrop in 1860. Square Lake of to-day had the name 
of Lake Sedgwick in 1860, and was known as Second Eagle 
Lake in 1842. Cross Lake of to-day bore the name of Lake 
Preble in 1860, and Long Lake was Cleveland Lake in 1860. 
The French settlers that live in the vicinity of the Fish River 
Lakes are still using the old names. 
Iymnea emarginata Say and L. ampla Mighels have also 
undergone several changes during this period of 100 years, as 
the following list shows: 
Iymneus emarginatus Say, 1821. 
Timnea emarginata Haldeman, 1842. 
Galba emarginata Baker, 1911. 
LTimrnea ampla Mighels, 1843. 
Radix ampla Morse, 1864. 
Lymnzxa mighelsi Binney, 1865. 
Lymnexa (Radix) mighelsi Dall, 1905. 
Timnea emarginata var. mighelsi Nylander, 1901. 
Galba emarginata mighelsi Baker, 1911. 
What will it be one hundred years from now? I have some 
