4 
Hartland, Vermont, rare. Canada, to the mountains of South 
Carolina; Alaska, to Berkeley, Cal. 
This appears in literature under the generic names of Buli- 
mus, Zua, Ferussacia, Helix, Achatina, and Cochlicopa—the last 
the name now accepted. 
24 Pupa pentodon Say 
Hartland, Vermont, common. Georgia; Missisippi; Montana. 
25 Pupa armifera Say 
Hartland, Vermont, rare. All eastern U. S., Montana. 
26 Pupa fallax 
Hartland, Vermont, rare. South Carolina; Nebraska; Texas. 
27 Pupa contracta 
Hartland, Vermont, common. All eastern U. S. 
28 Vertigo ovata 
Ovate conical, ventricose, apex conical, whorls 5, very convex, 
with deep suture; aperture half round, truncate above, lip in- 
curved within and reflected, marked externally by a groove, outer 
lip incurved in the middle; teeth 6-8, a large sharp one and a 
small one on the parietal wall, 2 on the columellar margin, one 
of them at its base, and 2 on the labrum, one of which is also 
basal; umbilicus open; color dark amber, shining; length 1.8, 
diameter 1 mm, 
Hartland, Vermont, common. All America. Found by the 
writer in the Cantillas canyon, Baja California. 
29 Vertigo milium 
Hartland, Vermont, common. Texas. 
30 Vertigo bollesiana 
Hartland, Vermont, rare. Virginia. 
31 Vertigo simplex 
Hartland, Vermont, rare. Canada. 
32 Succinea obliqua 
Hartland, Vermont, common. Georgia; Arkansas. 
33 Physa ancillaria 
Connecticut river, Hartland, Vermont, abundant. Louisiana. 
34 Physa heterostropha 
Hartland, Vermont, abundant. All North America. 
35 Bulinus hypnorum 
Slender, translucent, highly polished; whorls 5-7; apex appar- 
ently acute, but when closely examined, found to be convex; aper- 
ture narrow, obtusely rounded anteriorly, acute pcsteriorly; lip 
scarcely apparent; columellar fold very slight; color ochre-yellow 
or light yellowish-brown, sometimes presenting violet and green 
prismatic reflexions; length 13, diameter 6 mm. 
Abundant in a stagnant pond, often dry, in the woods on my 
father’s farm, Hartland, Vermont. Common to Europe, Asia, and 
the northern portion of North America. Alaska to Utah. 
This is one of the species that is a puzzle to systemists, having 
been given various generic names, for instence Bulla, Physa, 
