36 THE NAUTILUS. 
a rim or collar at one end, in the penis, similar to that which he had 
previously described and figured in Helix (Cochlicella) acuta. 
Further investigations are in progress. 
GENERAL NOTES. 
Nore on Mouuusks From ArcaprA, Missourr.—Mr. Frank 
M. Woodruff, while on a collecting trip during the latter part of 
May and first part of June, incidentally picked up a few mollusks, a 
list of which may be of some value and interest in the study of geo- 
graphic distribution. The region is reported by Mr. Woodruff to be 
rather stony and arid, the rock being granitic, and pulmonate mol- 
lusks, therefore, were very scarce. The Mississippi River was very 
high, in fact a veritable torrent, and but one fresh-water mollusk 
was found. The list of species is as follows :— 
Lampsilis ventricosus Barnes. Arcadia. 
Polygyra exoleta Binney. Vineland. 
Polygyra thyroides Say. Vineland. 
Polygyra clausa Say. Arcadia. 
Polygyra appressa Say. Arcadia. 
Polygyra dorfeuilliana Lea. Areadia. 
Vitrea indentata Say. Arcadia. 
Pyramidula alternata Say. Areadia. 
All of the specimens were typical. One specimen of appressa had 
a rather flat spire, but was otherwise normal.—F RANK C. BAKER. 
Fosstt Pearis.—Not having read anywhere that “ fossil” pearls 
have been found or noticed in the literature, | submit the following 
facts :-— 
Some years ago, while looking over some sand (very carefully) 
that I had collected on the Chipola River in west Florida, from 
Oligocene strata, I found and saved a pretty little pearl. I after- 
wards found one in some Pliocene sand from California collected by 
Dr. R. E. C. Stearns. I also found one other in some sand from 
Claiborne, Ala., which I had collected from the Eocene. Lately, 
while looking over some fossils from the “ Woods Bluff” Eocene 
from Thomasville and Choctaw Corner, Clarke Co., Ala., I found 
one other pretty little fellow, so that we now have four of them here 
for investigation. 
Such fossil specimens may be in other museums, but I have not 
seen or heard of the fact after diligent enquiry among the wisest of 
our workers here—F RANK Burns, Pu. D. 
