THE NAUTILUS. 107 
cared for, and then returned the rest to the water for future use. 
From one of the U. occidens I took one of the finest pearls that I 
had ever seen. It was a perfect oval, very lustrous, and about the 
size of a small buckshot. The exceptional shell found in the bayou 
was Margaritana confragosa Say, not heretofore reported in this 
stream, though they are not uncommon at Liverpool on the Illinois 
River. Two or three young shells were found, which is a good indi- 
cation that the parents were somewhere about. In a pool in the 
shade of a long bridge at Bernadotte, I found a large number of 
Pleurocera elevatum Say and a few Somatogyrus subglobosus Say. 
* * * * A collector in Texas has also sent me some fine 
specimens, a list of which may prove of interest to the members of 
the Isaac Lea Chapter of the Agassiz Association: Unio nodiferus, 
U. manubrius, U. rotundatus, very large and fine; U. purpuratus, 
U. aureus, also a variation of the same; U. Mitchelli, said to be 
found only in Guadaloupe River ; U. tampicooensis, U. hydianus, U. 
berlandierti, U. perplicatus, U. speciosus, U. tuberculatus, Ano- 
donta leonensis, A. stewartiana. The U. manubrius is the long-lived 
mussel, burying itself and living for months in the banks and beds 
of streams after they have dried up. The U. tuberculatus is the 
purple nacre variety. These are all from Jackson and Victoria 
Counties, and from Guadaloupe and Brazos Rivers, Skull, Colleto, 
Spring and Garcitas Creeks, and Ripley, Bluett’s and Manchoula 
Lakes. 
Of the smaller species [ also received the following: Spheriuwm 
elevatum, Polygyra texasiana, Praticolella berlandieriana, P. qris- 
cola, Polygyra auriformis, Physa mexicana, Vitrea electrina, Bulimu- 
lus schiedianus. 
While at Niagara Falls in August I found Goat Island rich in 
Helices. The Polygyra albolabris, large form, was particularly 
noticeable. Early in the morning great fine ones were to be seen 
crawling about over the leaves and in the crevices of the rocks in 
the almost impenetrable shade of the thick forest that covered the 
aeeHT a EO Ry 
I append the list or the Unionide of the State (Illinois). Later 
I will issue a printed list with localities. I am indebted for much 
valuable information and assistance to Messers. Hinkley, Ferris, 
Marsh and Wolf, of Illinois; to Dr. Leach, of Michigan, and the 
late Dr. Stein, of Indiana. Some of the species in the list are 
doubtless synonyms, as Unio zigzag and U. donaciformis, U. occidens 
