308 PROCEEDINGS OP THE ACADEMY OF 



Vertigo mod est a Gould. Meadow near Red Bank, rare. 



Helix albolabris Say. " Damp, shady woods and old quarries. I have 

 found them at twelve or fifteen feet elevation on the perpendicular walls of an 

 old quarry, near Germantown." (Tryon.) 



H. alternata Say. "New Jersey, above Cooper's Point," (Leidy,) and 

 found by Dr. Horn and myself, at various points around the city, especially at 

 " Robison's Knoll," near the mouth of the Wissahickon, and on the west side 

 of the Schuylkill, in damp places, usually under stones. 



H. appressa Say. "One specimen found near Germantown, on the 

 estate of E. E. Tryon." (T.) 



H. arborea Say. Common in logs and stumps, under bark. 



H. cellaria Mull. This species is said by Say (under the name of H. 

 glaphyra) to have been found in Philadelphia, but I am not aware that it has 

 since been reported by any one else. See Binney, vol. 4, p. 114. 



H. chersina Say. Banks of Delaware, ten miles above Philadelphia, 

 (Phillips teste Say.) " Near Germantown, rare." (T.) 



H. concava Say. I have found two specimens of this species, both west 

 of the Schuylkill, one below the Columbia Bridge, the other opposite Mana- 

 yunk. Mr. Conrad tells me that it was once very common west of the city. 



H. electrina Gould. Meadow near Red Bank, abundant. "One of the 

 most numerous species around Germantown." (T.) 



H. fa 11 ax Say. Robison's Knoll, near the mouth- of the Wissahickon, 

 abundant; also found common in the woods along the Schuylkill. "Around 

 Germantown, abundant." (T.) 



H. hirsuta Say. Robison's Knoll and west of the Schuylkill. "One of 

 our commonest species. I obtained 25 from a stump last season, and 50 more 

 from the same stump this summer." (T.) 



II. labyrinthica Say. East side of Schuylkill, near Falls of Schuylkill 

 village. Common near Germantown. Mr. Tryon says that this species lives 

 more exposed to the sun, and seems to need shade and moisture less than per- 

 haps any others of our native species, resembling, in this respect, the European 

 Helices. 



H. 1 i g e r a Say. Abundant in the meadow near Red Bank, and found oc- 

 casionally in the woods west of the Schuylkill. 



H. lineata Say. "Near Germantown." (Tryon.) 



H. mono don Racket. Probably should be considered as identical with 

 hirsuta " Germantown, one or two." (Tryon.) 



H. p u 1 c h e 1 1 a Mull. Germantown (Tryon) ; gardens in Philadelphia 

 (Leidy) ; found by myself under bark in the woods near the Falls of Schuylkill, 

 and by Dr. Horn and myself near Red Bank. 



H. suppressa Say. Robison's Knoll, mouth of Wissahickon. "Most 

 common of the small species, Germantown," &c. (Tryon.) 



H. thyroidus Say. "Germantown, plentiful on the estate of E. K. 

 Tryon." (T.) 



LlMACID/E. 



Tebennophorus Carolinensis Binn. One specimen found by Dr. Horn 

 and two by myself, north of the city. Exact locality forgotten. 



[Sept. 



