76 PROCEEDINGS OP THE [Oct., 1875. 



OCTOBER 26th, 1875. 

 The President in the Chan*. 



Mr. Mazyck read the following note on the occurrence of 

 HELIX TERRESTRIS, CHEMNITZ, IN NORTH AMEBICA. 



BY WM. G. MAZYCK. 



In July last, I accidentally discovered a number of dead shells of IleUx ter- 

 restris, Chemnitz, in St. Peter's ( Eioiscopal ) churcliyard, in Logan Street, in 

 this City, but, notwithstanding a most diligent search, no living examples of 

 the species could be found at that time, owing, probably, to the prevalence of 

 an almost unprecedented drought. 



In September, I was, however, fortunate enough to secure two hving speci- 

 mens, which were sent for examination to my friend, Mr. W. G. Binney, who 

 kindly furnishes the following description of the jaw and figures of the lingual 

 dentition : — 



' ' Jaw slightly arcuate, low, wide ; ends blunt, shghtly acuminate ; anterior 



surface with over 14 broad, crowded, flat ribs, sHghtly denticulating either 



margin." 



Von Martens, ( Albers' Heliceen, p. 116,) places the species in the sub-genus 



Jhirricula, Beck, giving as its habitat, " Italy and Southern 



France." I have never heard of its occurrence elsewhere until its 



discovery in Charleston, where it exists, as far as I can ascertain, 



only in St. Peter's churchyard, accompanied by Helix aspersa, 



H.TEKRESTRis. MuLLEE, H. IwpetoTiensis, Shuttlw., Zonites minusculus, Binn., 



(enlarged.) Pwpa marginata, Say, and Stenogyra decollata, L., which latter 



is exceedingly abundant throughout the City. 



St. Peter's Church was burnt in the great fire of December 12, 1861, at 

 which time the greater portion of the shrubbery of the graveyard was also de- 

 troyed. The ruins of the building were removed about two years ago, and, 

 the shrubbery not having been renewed, there is but httle shade, a circumstance 

 which has, doubtless, greatly retarded the propagation of the species which 

 has probably existed in small numbers for several years in this very restricted 

 locality. 



