THE NAUTILUS. 63 
As a fossil, Gundlachia occurs in 8. Carolina in a quarternary 
marl containing mastodon bones (Cook, /.c.). 
[In addition to the records of Gundlachia in North America, 
compiled by Mr. Hedley, we may instance the finding of numerous 
specimens in ponds near Greenport, Long Island, N. Y., by Mr. 
Sanderson Smith, recorded in the Annals of the Lyceum of Nat. 
Hist. of N. Y., ix, 1870, fig. 6. The specimens differ sufficiently 
from G. meekiana to be considered by Smith a distinct species, 
which he names G. stimpsoniana. 
A Gundlachia, closely allied to, if not identical with, G. meekiana, 
Fig. 1. 2 
Gundlachia from Rock Island. 
occurs abundantly in a lily-covered pond near Rock Island, I]linois. 
Specimens are drawn in the illustrations here given (figs. 1, 2), fig. 
1 representing a shell with small accessory cap, the other figure 
showing one with it large. All imtermediate sizes occur. With 
these, are found numerous specimens of like asymmetrical contour, 
but lacking the accessory shell! These are, as far as the shells are 
concerned, merely Ancylus. They live with the true Gundlachias 
on the lower surfaces of the lily-pads, grazing on their watery pas- 
ture like little sheep dotting a hillside. Professor B. Shimek has 
found something very similar to these near Lincoln, Nebraska (see 
Nauriuus, August, 1890, p. 48). 
Still another record of Gund/achia is given by Dr. Victor Sterki, 
who found it at New Philadelphia, Ohio (see Nauriuus, Jan., 1895, 
p. 107).—Pilsbry]. 
‘Boettger has ventured to name an immature fossil from the May- 
ence Basin— G. francofurtana (Fischer’s Manuel, p. 505). 
A defective monograph of the genus, by Clessin, appeared in 1882 
in the Conchylien Cabinet, Bd. i, Abth., 6, pp. 1-5. 
The existence of this genus in Australasia was first announced by 
R. M. Johnston, who, in March, 1877, laid before the Royal Society 
of Tasmania an account of G. petterdi, from the vicinity of Launces- 
