THE NAUTILUS. 111 
timber, I collected a number of specimens of Achatinella muste- 
lina and accidentally found one plain Partulina dubia, the first 
I had ever collected on the north side of the Waianae Range. 
On Dec. 29, 1918, I returned for more, and found a few plain 
ones a few yards away from the trail and less than fifty yards 
from Haleauau stream bed. A scant hundred yards farther up 
the trail, under the bark and in knot holes of the smooth-leaved 
lehua trees growing within arm’s reach of the very trail, I found 
several fine specimens of dark, banded P. dubia, very similar to 
those which I had found in Waimano Valley, above Pearl City, 
Koolau Range, in 1913. In spite of careful and persistent 
hunting, they could be found only within a very small area, 
less than a hundred feet in extent. They were all within fifteen 
feet of the ground, most of them not more than five feet off the 
ground. 
I showed them to Mr. Irwin Spalding, who said that they 
were the most distinctly banded dubia he had ever seen; but I 
think that those which I collected in Waimano Valley, above 
Pearl City, Koolau Range, in 1913, are more distinctly banded, 
and in some specimens even darker. At the first opportunity, 
Jan. 5, 1919, I took Mr. Spalding up to the locality and we 
managed to find a few more specimens in a knot-hole which I 
had not searched quite thoroughly. Most likely you have seen 
those specimens in Mr. Spalding’s collection while you were 
here last summer. 
No further visits were made by me till June 13, 1920, when 
I went alone again and managed to find four more excellent 
specimens of banded dubia, in the same locality. A scant hun- 
dred yards above this dubia locality and a little farther off the 
trail—not more than two hundred feet away from the trail on 
the Haleauau side—I found under the bark on the trunks of 
the smooth-leaved lehua trees four young specimens of an en- 
tirely new variety or species of Achatinella. They were all near 
the ground. I hunted the tree trunks, but the higher I climbed, 
it seemed, the less luck I had, so I finally settled down to hunt- 
ing down low. I could not hunt very long then as it was get- 
ting late. 
Having collected a few Achatinella spaldingi (with Mr. Spald- 
