320 A. E. Verrill—The Bermuda Islands. Tao, 
Agua Toad may also eat it. The use of poisons, like lead cyanide, 
on the leaves of succulent plants of which it is fond, might be 
useful. 
Slender Snails. (Subulina octona (Ch.); Opeas octonoides (Ad.); O. 
Swiftianum (Pfr.). 
Figures 77, 78. 
These three species of West Indian Achatinide are usually found, 
in the daytime, under stones and old logs. They have translucent, 
whitish, elongated shells, and are sluggish in their habits. The first 
named, which is the most common, was first recorded by 'T. Bland, 
in 1881; the second and third were recorded in 1888, but both are 
still rare. A fourth and very small species of this group ( Cecilioides 
acicula), from Europe, was recorded by T. Bland in 1861, but has 
not been observed recently and may have died out. Fig. 78a. 
The Ennea bicolor, a small, widely distributed East Indian species, 
of which a single example was collected by Heilprin in 1888, and 
recorded by Pilsbry in 1900, was not found by our parties. 
American Toothed Snail. (Polygyra appressa (Say). 
Ficures 75, d, e, f. 
This North American species, which is now very common, at least 
in Hamilton Parish and Smith Parish, was recorded by Mr. J. T. 
Bartram and J. M. Jones, in 1876, as found only in a single locality 
near St. George’s. It was first recorded by Temple Prime, in 1853, 
(Bermuda Almanac) under the name of Helix Sancta- Georgiensis, 
n. sp. 
It is nocturnal in its habits and may be found during the day con- 
cealed under stones in the borders of gardens and_ fields, associated 
with several other species, especially with Helicina convexa, Poecillo- 
zonites Bermudensis, P. circumfirmatus, Hulota similaris, Opeas 
Swiftianus, ete. It is common in the middle and southern United 
States. The Bermuda form is the southern variety. 
Tree Snails; Bark Snails. (Helicella ventricosa (Drap.); Vallonia 
pulchella (Mill.); Succinea Barbadensis Guild.) 
Fiecures 79, a, b, ¢, d. 
The first named of these is the most abundant. It is found in the 
crevices of the bark or in other sheltered spots both on standing and 
fallen trees of various kinds, including cedars and cycads, sometimes 
