2 THE NAUTILUS. 
Solarium planiforme n. sp. pl. I, figs. 4, 5, 6. 
Shell flat, whorls six, apical one smooth, the balance with a 
beaded spiral boundary followed closely by a smaller spiral likewise 
beaded, two faint spirals near suture; lines of growth fine, coarser 
nearer aperture, the side of the body-whorl forming an acute angle 
with the top and nearly a right angle with the base; the side is 
slightly convex, with a granular raised line immediately below the 
periphery and two fainter ones near the base; the basal keel 
beaded ; umbilicus wide, marked with two or three beaded lines. 
Aperture wedge-shaped, narrower at junction with body-whorl. 
Max. diameter 19 mm., elevation 6 mm. 
Locality: near Rosebud P. O., Wilcox Co., Ala., in Matthews’ 
Landing beds. 
A MONTH WITH THE MICHIGAN FISH COMMISSION. 
BY BRYANT WALKER, DETROIT, MICH. 
In 1893, the Michigan Fish Commission, in co-operation with the 
University of Michigan, inaugurated a systematic biological exami- 
nation of the Great Lakes, with special reference to the work of the 
Commission in replenishing the rapidly decreasing fisheries of the 
State. The headquarters of the field-party for 1894 was established 
at Charlevoix, the well-known summer resort, on the east coast of 
Lake Michigan, and formerly a fishing station of considerable mag- 
nitude. Through the kindness of Prof. Henry B. Ward, the 
Director-in-charge, the writer was invited to spend his vacation 
with the party as conchologist. In addition to the usual methods 
of collecting along the shore and from small boats, considerable 
dredging was done in the deeper waters of both Lake Michigan and 
Pine Lake. A three days’ trip to the Beaver Islands at the north- 
ern end of Lake Michigan, was one of the most interesting episodes 
of the summer, and one most fruitful in its results, as it was, un- 
doubtedly, the first time the islands had been visited for scientific 
purposes. The unusual facilities enjoyed by the expedition in the line 
of deep water dredging, have afforded many noteworthy additions 
to the fauna of the State in all classes of the invertebrata and es- 
pecially in the mollusca; and, at the suggestion of the editors of 
Ture Naurivus, the following summary of the results obtained has 
