4 THE NAUTILUS. 
The mantle retracted from the head, which thus exposed is one em. 
long—the jaw was easily seen, by the unaided eye, as a brown cres- 
centic band in the superior lip, and with an ordinary magnifying 
glass the ridges were easily seen. The whole animal is faded and 
contracted, but still pliable. The next I obtain will be killed 
in accordance with your directions in water, and will be kept for 
you. 
Associated with the solea, and in damp places, I found some num- 
bers of the slug which is given in d’Orbigny as Limax unguis Fer., 
but they are not as large as represented in the plate. I found this 
latter species very plentiful in the Prado at Montevideo and always 
several individuals together. This latter is in contrast with Veroni- 
cella, which were alone and widely separated. 
I had a few Chitons of both species mentioned in the first part of 
this letter, alive in my aquarium bottle, for a few days in my room, 
with a long strip of glass upon which I coaxed them to crawl for 
the purpose of sketching for water-color work, and was surprised at 
the rapidity with which they travel, and it was rendered all the 
more decided when I compared it with the movements of the Ver- 
onicella which I had in another bottle alongside. 
CONULUS FULVUS MULL.! VAR. DENTATUS, N. V. 
BY DR. Y. STERKI. 
Among a number of Con. fulvus from Jackson Co., Alabama, 
kindly sent by Mr. H. E. Sargent, last year, there were a few speci- 
mens with distinct “teeth” in the base of the last whorl. Since 
then, Mr. Sargent has paid attention to the matter, and a few days 
ago sent me some more specimens in two lots, one from the valley and 
another from the hills. The latter were most small, young and half 
grown, and most of them showed 1-2-3 small, white, testaceous. 
deposits in the base of the last whorl, at somewhat irregular inter- 
vals, roundish or elongate in a radial direction. They are not high, 
tooth-like, but quite distinct, whether seen through the shell, or if 
near enough, from the aperture inside, and recall the same feature 
1The species was first described by Miiller, not by Draparnand. It may 
be said again, that Coz/us is a genus founded on anatomic characters. 
