136 THE NAUTILUS. 



Vitrea indentata (Say). Occasionally at 1, 2, 3 and 4. 

 Vitrea rhoadsi (Pilsbry). Uncommon, found at 1. 



Striatura ferrea (Morse). Rare, and only found at 1. 



Striatura milium (Morse). Common at 1, occasionally at 2, 

 3 and 5. 



Euconulus fulvus (Miiller). Not satisfactorily distinguished 

 from the next species. 



Euconulus chersinus (Say). Common at 1, fairly common at 

 3 and 5. 



Zonitoides hammonis (Strom). Common at 1, 2, 3 and 5. 



Zoniloides arborea (Say). Abundant everywhere. 



Zonitoides minuscula (Binney). Rarest of the Zonitidae, found 

 only at 1. 



Zoniloides exigua (Stimpson). Common at 1, fairly common 

 at 3. 



Philomycus carolinianus (Bose). Occasional at 2 and 3. 



Pallifera dorsalis (Binney). Occasional at 2 and 3. 



Pyramidula alternata (Say). Occasional at 2, common at 4. 



Pyramidula cronkhitei anthonyi (Pilsbry). Occasional and 

 generally distributed. 



Helicodiscas parallelus (Say). Common and generally dis- 

 tributed. 



Punctum pygmaeum minutissimum (Lea). Occasional at 1. 



Succinea retusa (Lea). Fairty common at 2. 



Succinea ovalis (Say). Uncommon at 2 and 3. 



Succinea ovalis totteniana (Lea). Common at 3. 



Succinea avara (Say). Common at 5. 



Strobilops labyrinthica (Say). Common in one spot (about a 

 decaying tree-top) at 1. 



Bifidaria contmcta (Say). Found at 1. 



Bifidaria pentodon (Say). Common at 1 and 3, the com- 

 monest Pupillid. 



Bifidaria lappaniana (C. B. Adams). Found at 1 and 3. 



Vertigo gouldii (Binney). A few specimens from 1 were con- 

 sidered to be this species. 



Vertigo bollesiana (Morse). Occasional at 1. 



Vertigo ventricom (Morse). Fairly common at 1. 



Vertigo ovata (Say). Fairly common at 1. 



Vallonia pulchella (Miiller). Rare, at 1 only. 



