while the typical form is of general and abundant distribution 
is also of interest. 
Bipdaria corticaria (Say) has not yet been reported out- 
side of the Saginaw-Grand valley, through which it seems to 
range there from one extremity to the other. 
The occurrance of Vitrea wheatleyt (Bld.) in Michigan, 
with an indicated range over the whole of the lower peninsu- 
lar is of peculiar interest. Originally described from the 
Tennessee mountains, it has recently been reported from 
western Pennsylvania and Indiana, which, with its wide 
range in this state, would indicate that it will be found to be 
of general occurrance in the northern and central states. 
The discovery of Gastrodonta demissa (Binn.) in Kent 
county is even more surprising, as it has not heretofore been 
found west of Pennsylvania in any of the states north of the 
Ohio river. The identification of the species has been con- 
curred in by Dr. V. Sterki, so that there can be no question 
on that score. 
In conclusion, it may be said that the result of the present 
investigation has been not so much to exploit the extent of 
our knowledge of the terrestrial mollusca of the state as to 
emphasize its meagreness and to render almost painfully 
apparent the vast amount of work that must be done before 
any satisfactory results can be expected from the study of our 
fauna as a whole. When the fauna of every county of the 
state is known with the same accuracy as that of Kent county 
is to-day, then, and not until then, can the conchologists of 
Michigan begin to rest from their labors. For the accom- 
plishment of this work, we must look to the individual col- 
lectors of the state. Every local collection with authentic 
localities is a distinct contribution to science. And if the 
many teachers of zodlogy in our public schools would seek to 
interest their scholars in the fauna and flora of their immedi- 
ate neighborhood and stimulate the formation of local collec- 
tions, much valuable work might be done and many a good 
collector started on the broad and pleasant path that leads 
through the woods and fields and along the ‘‘ still waters” to 
health and happiness. 
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