— 
THE NAUTILUS. 99 
Succinea avara Say. Limington, Bowdoinham, and Veazie. 
Succinea aurea Lea. Wells. 
Carychium exile canadense Cl. Sidney, Fairfield, Abbott, and 
Moaticello. 
Carychium exiguum Say. Bowdoinham, Old Town, and Winn. 
ANCYLUS OBSCURUS HALDEMAN AND SPECIES REFERRED TO IT. 
BY BRYANT WALKER. 
i 
The available information down to 1903 in regard to Halde- 
man’s species was summarized in my paper in the NaurILus, 
XVII, p. 25. The re-discovery of A. obscurus by Goodrich in 
1913 (Navt., XXVII, p. 92) in the South Fork of the Powell 
River at Big Stone Gap, Wise Co., Va., has enabled the specific 
standing of that species to be definitely determined and given 
a basis for comparison with other forms that have been referred 
to it. i 
Through the courtesy of Miss Crystal Thompson, the Curator 
of the Amherst College Museum, I[ have been able to examine 
all of the Ancylide in the C. B. Adams collection. This 
material with some other in my own collection obtained from 
different sources has enabled me to come to conclusions, more 
or less definite, in regard to the recorded citations of Halde- 
man’s species in Florida and the West Indias. 
The doubt expressed by Bourguignat, Tryon and Clessin as 
to the correctness of the West-Indian citations proves to be 
fully justified. 
In the Adams collection are two lots labeled ‘‘ A. obscurus ? 
Hald.’’ These contain three very distinct species, none of 
which is obscurus. They will be considered separately. 
One of these, however, is identical with a set in my own col- 
lection received as ‘‘ A. obscwrus’’? from Sowerby and Fulton 
and these again are the same as a set in the MacAndrew collec- 
tion labeled ‘* A. chittyi Ads.’’ from Guadeloupe. The original 
