THE NAUTILUS. 19 
although the greater portion of these forms continue to flourish 
throughout the region, some have become extinct within the limits 
of the State, and occur living only in distant localities ; while several 
others are known only as fossils. To the last class, Helicina occulta 
Say, was, until very recently, thought to belong. 
The first discovery of Helicina occulta living, was a few years ago, 
in the vicinity of Iowa City, where it was found in great abundance. 
Its distribution is very peculiar and very limited in extent. The 
locality is a steep hill-side on the south bank of Turkey Creek, four 
miles north of the town; and is covered witha dense growth of ferns 
and other plants. Here, confined within an area scarcely forty 
yards in extent, this little species occurs so abundantly that several 
hundred have been collected in a very short time. Beyond this 
secluded spot not a single specimen has been found living in the 
vicinity.* A similar limited locality in which this species flour- 
ishes in great numbers isin Hardin County, Iowa. It is also reported 
from South Pittsburg, Tennessee. + The form is now recorded 
from Winona, Minnesota, where it was found by Mr. J. M. Holzinger, 
who has kindly sent specimens for examination. Its station is in all 
respects’ similar to the Iowa City locality. It thus appears very 
probable that a careful search in favorable situations will disclose 
the presence of this interesting little gasteropod in numerous places 
throughout northeastern Iowa and the adjoining parts of contiguous 
States. The region referred to is topographically well adapted for 
the occurrence of this species, but its peculiar and strictly-local dis- 
tribution tends to render its detection extremely difficult. 
GENERAL NOTES. 
SPH#RIUM CUBENSE Prime has been found on the shores of Lake 
Monroe, Florida, very rare— Berlin H. Wright. 
Buutrutus Hempaitir Wright is a thinner shell than JB. 
Marielinus Poey, and more corpulent, while the revolving bands are 
redder, finer, and continuous in the last-named species. The substance 
of the shell of B. Marielinus is white, while that of B. Hemphilli is 
light-amber colored —Berlin H. Wright. 
Limax eaten by Salamanders. In the stomach of a specimen of 
the abundant little red Salamander Plethodon erythronotus (Green) 
* Keyes: Annotated Catalogue Mollusca Iowa,—Bull. Essex Institute, Vol. 
Ke 
+ Call: Bull. Washburn College, Vol. II, p. 16, 1887. 
