THE NAUTILUS. 63 
Goniobasis louisvillensis Lea. 
Goniobasis informis Lea. 
Eurycelon leait Tryon. 
Campeloma decampii W. G. Binn. 
Somatogyrus currierianus Lea. 
Unio depygis Con. 
Two new species were added to the fauna of Michigan from his 
collection, viz.: Suecinea decampii Tryon and Vertigo morsei Sterki. 
The types of Limnea desidiosa var, decampii Streng, recently de- 
scribed in THE Nauti.us, were also found by him. 
In 1881, under the auspices of the Kent Scientific Institute, Dr. 
DeCamp published an elaborate “Catalogue of the Shell-Bearing 
Mollusea of Michigan.” This, which is his only publication in 
conchology, contains a list of 221 species and 9 varieties, and was 
the most complete list of the State fauna published up to that time. 
Eliminating synonyms and doubtful forms, it gives a total of 185 
species as now recognized as against 149 species cited in Currier’s 
catalogue of 1868. It also is of particular value as containing de- 
scriptions and figures of three species named but never formally de- 
seribed by Currier, viz.: Limnea contracta, Physa parkeri and Ano- 
donta houghtonensis. He was an enthusiast in his scientific work, 
and his time and collection were always at the service of his fellow 
collectors. 
Through his generosity the first set of his Michigan shells, upon 
which his catalogue was based, is a cherished part of the writer’s 
collection, and the remainder of his shells have been deposited in the 
Kent Scientific Institute, where they “will be kept to benefit and 
instruct those who come after him.” 
A DAY ON THE CHICAGO DRAINAGE CANAL. 
BY FRANK C. BAKER. 
July 30th, the Chicago Academy of Sciences spent its annual 
field day on that wonderful engineering triumph, the Chicago Drain- 
age Canal, and conchological results of the excursion may be of 
some interest to the readers of the Naurius. 
The day was all that could have been desired, the sun being more 
or less obscured by clouds, which made collecting more comfortable 
