8 THE NAUTILUS. 
talium pretiosum Nutt., Lutricola alta Conr. and Callista (Amian- 
tis) callosa Conr. 
UNIO COLLECTING, BY DR. STRODE. 
On October Ist I went to London Mills on Spoon River, about 40 
miles up stream in the hope of finding U. capax and U. aesopus, but 
was disappointed. I was surprised to find U. undulatus Bar. super- 
ceeding U. plicatusand U. multiplicatus, so common Jower down the 
stream. MM. complanata Bar. was here in great numbers ; U. occidens 
and U. gibbosus were also quite abundant. 
On Nov. 10th, while on a picnicing expedition at Duncan Mills, 
20 miles from the mouth of Spoon River, I observed on the oppo- 
site side of the stream a rocky ledge and beach below extending for 
quite a distance up and down the river. 
The thought at once struck me that my giant multiplicatus might 
be once more found here. Accompanied by Dr. Maguire and our 
wives we crossed over and lost no time in getting into the water 
among the rocks. Almost the first shell brought up was one of 
these big fellows. They were here in company with scores of big 
plicatus, ligamentinus, tuberculatus and a dozen other species. In 
two hours’ time we had found over fifty of the multiplicatus, one 
good U. capax and one M. confragosa four inches long. The doctor’s 
bird dog Belva, partook of our enthusiasm and manifested a desire 
to also search for shells. After alittle showing she understood how 
it was done, and it was amusing, indeed to see her with head sub- 
merged hunting a shell and then after securing it the air of import- 
ance assumed as she waddled ashore with it. We hope, the coming 
season, to make an expert collector of her. 
One of the most pleasant and profitable collecting trips of the sea- 
son was made in September at a place called “ The Devil’s Elbow,” 
five miles below Havana on the Illinos River. At this place the 
south bank for nearly a half mile is a sand-bar, full of little bayous, 
and in these places was where we found the Unios. Prof. Hart, of 
the State Biological Station, who was one of the party, brought with 
one sweep of his dredge-net over fifty specimens, covering a dozen spe- 
cies. All ofthe following species were found plentiful, viz.: U. plicatus, 
U. multiplicatus, U. alatus, U. gracilis, U. pustulosus, U. pustulatus, U. 
lachrymosus, U. anodontoides, U. gibbosus, U. ligamentinus, U. ebenus, 
U. ellipsis, U. solidus, U. donaciformis, U. cornutus, U. elegans, M. 
confragosa, M. rugosa, M. complanata. <A half-dozen U. securis 
were found, the first record of this species for the county. 
