348 Mr. Jeffreys on the Mollusca of the Upper Harz. 
XLIV.—On the Mollusca of the Upper Harz. 
By J. Gwyn Jurrreys, Esq., F.R.S. 
Durine a visit with my family this autumn to the northern part 
of the Harz, I assisted my son and one of his sisters in collect- 
ing the land and freshwater Mollusca there; and the following 
notice of some of the less common species may be useful with 
reference to their geographical distribution. Neither Carl 
Pfeiffer, Rossmassler, nor (as I believe) any other conchologist 
has indicated any localities in this part of Germany. 
Limax arborum. Occasionally in the woods about Alexisbad. 
L. Sowerbyi. Under stones at Falkenstein and other places ; not 
common. 
Succinea Pfeifferi. With S. puéris, near Alexisbad; but less com- 
mon than that species. 
S. oblonga. With the last; not common. 
Vitrina diaphana. Under stones in the woods about Alexisbad ; 
common. 
Helix fruticum, var. rufescens. On shrubs and nettles in the same 
woods. Adult specimens are rare. — 
H. incarnata. In the same woods, and at the Rosstrappe; rather 
common. 
H. strigella. Rubeland ; rare. A half-grown specimen contained 
the larveeform pupa of Drilus flavescens, the female of which has 
been named Cochleoctonus voraz, from its snail-eating habit. I found 
a similar pupa, five years ago, in a Helix incarnata near Lausanne 
in Switzerland, which, as in the present case, completely occupied 
the spire of the shell after devouring its former inhabitant. 
H. lapicida, var. pallida. On rocks near Alexisbad ; rare. 
H. pygmeea. In the woods near Alexisbad; not common. 
H. pomatia. It is remarkable that, although we diligently searched 
for several weeks the environs of Alexisbad, not a single specimen 
was found by us; and the residents at that place said they had not 
met with it. It is common in other parts of the Harz. This shows 
how irregular and apparently capricious is the distribution of some 
species. 
r Zonites alliarius. Rosstrappe, where only one specimen occurred 
to us. 
Z. nitens (Michaud). In woods at different places; common. It 
appears to have been confounded, in this country, with the Helix 
nitidula of Draparnaud. 
Z. nitidus. In marshy places near Alexisbad and Harzgerode ; 
common. 
Z. radiatulus, and var. pallida (Helix viridula, Menke). In the 
woods and under stones near Alexisbad, Harzgerode, and Stolberg ; 
common. 
Z. purus. With the last; but rare. 
Bulimus Lackhamensis. In the woods at Alexisbad ; rare. 
Azeca tridens. With the last; not common. 
