MOLLUSCAN WORLD 
1 Helix albolabris 
This is the first snail that the writer remembers finding, when 
a boy on his father’s Green Mountain farm, in Hartland, Vermont. 
Its generic name signifies a coil, while its specific name, from the 
Latin albo (white) and labris (lip), describes the chief character 
of the shell. This species is too well known to need further de- 
scription in this place, and is given the place of honor in this 
work, as the present volume is designed as a list of species per- 
sonally collected by the editor, and as a list of West American 
Mollusca in general. 
2 Helix sayi 
It was a proud boy who returned one day from the woods back 
of the old farm house with a specimen of this beautiful snail— 
and it was a sorry chap when its escape from its new home was 
discovered. It was finally recaptured, and its shell now rests in 
a tray in my cabinet. It was named for the eminent naturalist. 
Thomas Say. The generic name Helix is not now used for these 
snails, but it is hardly necessary to quote the list of synonyms 
here. The specific name also will have to be discarded, if the 
strict laws of priority were followed. 
3 Helix dentifera 
This is one of the rarest species in Hartland, Vermont, only 
one specimen being found by my brother, John H. Orcutt; several 
specimens from this locality are in my cabinet that were collected 
by C. O. Tracy. 
4 Helix palliata 
Rare in Hartland, Vermont, but more abundant in some of 
the more western states, ranging from Canada to Georgia and 
Louisiana. 
5 Vitrina limpida 
Hartland, Vermont; rare. 
6 Hyalina arborea 
Hartland, Vermont; abundant. Occurs from Labrador to 
Texas and New Mexico, and from Florida to California. 
Shell umhilicated, depressed, very slightly convex, thin, pellu- 
cid; epidermis amber-colored, smooth, shining; whorls 4-5, with 
very minute, oblique striae, appzrent when viewed with a micro- 
scope; aperture transversely rounded, peristome thin, acute; um- 
bilical region indented; umbilicus moderate, well developed, 
round and deep; greater diameter 5, lesser 4 mm, height nearly 3. 
This minute species I have detected near Julian, San Diego 
county, Cal., as well as in New England. 
7 Hvyalina indentata 
Canada to Florida, Texas. Utah; Hartland. Vermont. rare. 
Resembles H: arboreus, but is distinguished by its distant im- 
eb a lines, by the enlargement of the last whorl, and no um- 
ilicus. 
8 Hyalina lineata 
Shell widely umbilicated. discoidal; epidermis greenish; 
whorls about 4 visible on tke base of the she'l as well as above, 
