THE NAUTILUS. he 
53 mill. Respiratory orifice 2} mill. from anterior border. Body 
subeylindrical, somewhat tapering, rather blunt at end. Distance 
from posterior end of mantle to end of body 8 mill. Back with a 
blackish band reaching a little more than half its length, and lateral 
darker blackish bands reaching its whole length. Reticulations dis- 
tinct, “ foliated.” Sole strongly transversely striate-grooved, but not 
differentiated into tracts. Jaw pale, strongly striate, moderately 
curved, not ribbed. Lingual membrane long and narrow. Teeth 
about 55-1-55. Centrals tricuspid, laterals bicuspid, marginals with 
a large point, and one (sometimes two) small outer points. Liver 
pale chocolate. 
Found by Mr. A. F. Wickham under the bark of rotten logs in 
the woods around Lake Coeur d’Alene, Idaho, 1889. 
In its reticulations, and general external characters, this species 
resembles P. andersoni, of which it is possibly a variety. 
OCCURRENCE OF HELICINA OCCULTA SAY, IN BROWN CO., WIS. 
BY GEO. T. MARSTON. 
My first knowledge of the occurrence of this mollusk in Brown 
County, was in the spring of 1886, when I found a single “ dead 
shell” on the shore of Fox river about two miles south of DePere. 
Again, on May 15, 1888, I found five (5) specimens, all alive, upon 
the banks of a small creek which, rising in a limestone ridge about a 
mile from where the specimens were procured and about three miles 
east of DePere, flows into East or Devil River and eventually into 
Green Bay. 
The shells were found, within a space of 300 feet, along the banks 
of this creek, the land above and below this being under cultivation. 
They were isolated and were obtained only after careful search, my- 
self and an assistant going over the place frequently. 
A week later when another search was made, and in the spring of 
1889, no specimens could be found. 
The little tract inhabited by this shell is very rich in land and 
fresh water mollusks, and seems to be a favorite resort of Helicodiscus 
lineata, which lives there in great numbers. 
Green Bay, Wis., January 28, 1890. 
