58 THE NAUTILUS. 
that of a family, must stand according to its first spelling, how- 
ever erroneous. Should it ever come into general favor it would 
lead to some strange results. 
The International Code alone must write the ‘‘finis’’ toa 
discussion of this sort. 
ON THE OCCURRENCE OF PYRAMIDULA RUPESTRIS IN MAINE. 
BY EDWARD 8. MORSE. 
Forty years ago while collecting land shells alongside the 
road in Riley, Maine, 17 miles north of Bethel, I found two 
specimens of a small Helix, which at the time I mistook for 
a variety of Planogyra astericus, being devoid of the elevated 
rings following the lines of growth; it was apparently the 
same size, form and color of P. astericus. Instead of being 
found in an alder swamp in wet ground, a common habitat 
of P. astericus, it was found in-a hard-wood growth on the 
side of a hill associated with S. labyrinthica, S. arborea, S. 
exigua and other common species. Under the microscope I 
found the proportions of the shell different, as the acecompany- 
ing drawings will show. Fig. 1 is the new form; fig. 2 is P. 
astericus drawn on the same scale. Realizing that the shell 
was new to this country, if not a new species, and not deem- 
ing it prudent to describe a new species from two specimens, 
QL) 
Fig. 3 
I visited the region again in 1891 in company with Major 
John M. Gould, who was with me the first time. We searched 
the woods in vain for a specimen of the shell. In August of 
this year Major Gould again visited the place but could not 
find the shell. A recent study of European species leads me 
to regard this nova as the old Helia rupestris of Draparnaud, 
