40 THE NAUTILUS. 
SOME NOTES ON FLORIDA MOLLUSCA. 
BY FRANK A. WHITE. 
Just before the middle of March I went on a trip to the head- 
waters of the Halifax river, which is one of the coast-wise waters of 
Florida. On that trip I had the pleasure of picking up two shells 
of Argonanta argo var. americana. I found them on the Atlantic 
Beach about thirty miles north from Mosquito Inlet. 
During the past winter and spring there have been over a hundred 
of these shells picked up in this vicinity. I never heard of but 
seven having been found on this beach previous to this season. 
I also found Cyrenoides floridana Dall. These animals were alive 
and in apparent health, about one hundred feet from the creek and 
from $ to } inch below the surface of the soil. The land was low 
and at the time of finding was wet from a copious rain. I also 
came across a locality where Physa pomilia Conr. are found, in 
abundance in running water. 
In January, 1895, I spent some time at Crescent Beach about 
twelve miles south of Cape Canaveral. One day I walked south 
about two or two and a half miles to “ the rocks” and found a large 
live Cyprea exanthema although it differs very much in contour and 
spots from the “ ©. exanthema” in my collection. Thinking per- 
haps some of the measurements might interest the readers of the 
Naurtiuus I submit the following: 
Length 113, width 602 mm.; height when lying with aperture 
down, 46 mm.; aperture at the widest place 19 mm.; spire not 
covered, and shows five volutions, dental plications on lip 40; plica- 
tions on columella 34; lip only slightly inflexed having the inner 
side of lip all visible. 
When found the entire shell was a rich dark brown externally ; 
purple inside where visible. The outside showed no trace of band, 
spot, or growth-lines but it has faded much although kept in the 
dark most of the time, and now shows growth-lines more than half 
way round, across the back it shows three light bands and near 
both lips light spots. In the summer of 1881 I found one somewhat 
smaller of the same rich brown color and in just about the same 
place. I have never known of any of this species being found alive 
any farther north than “ the rocks.” 
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