THE NAUTILUS. 35 



the midst of the salt marshes which separate the coast islands from 

 the mainland of New Jersey. Those visited lie perhaps a half mile 

 out on the salt marsh from the inside or north shore of Yentner, a 

 suburb of Atlantic City. They are elevated a lew feet above tlie 

 level of the surrounding marsh, and support a varied association of 

 plants. In one place a single large holly tree stands in a thicket, of 

 low shrubs, poison ivy, etc., the whole only :i few rods in extent. 

 Here were found 



Polygyra albolabris maritima (Pils.). Cochlicopa lubrica (Miill.). 



Vallonia perspectiva (Sterki). Pupilla muscorurn (L.). 



Helicodiscus parallelus (Say). Bih'daria contracta (Suy). 



Zonitoides arborea (Say). Hifidaria pentodon (Say). 



Zonitoides minuscula (Binn.). Vertigo milium (Gld.). 



This place, on a subsequent visit, was found deeply buried in 

 sand, drifted from the surrounding area of made land, where it has 

 been pumped out of the inlet. 



Further eastward, and separated from the preceding by about half 

 a mile of salt marsh, there is a narrow but rather long and sparse 

 grove or copse of cedars, with dense underbrush of wild rose, poison 

 ivy, sumac, grape, pokeberry, etc., etc. This is directly opposite 

 Vassar Place, Ventner, and perhaps a half mile out in the marsh. 

 Here were found: 



Vallonia perspectiva (Sterki). Pupoides marginata (Say). 



Zonitoides minuscula (Binn.). Pupilla inusconun (L.). 



Zonitoides arborea (Say). Bifidaria contracta (Say). 



Cochlicopa lubrica (Miill.). Bifidaria pentodon (Say). 



In another place near by the same species were found with the 

 addition of Vertigo milium Gld. and the shells of Agriolimax. 



It is not easy to say how these snails readied such isolated spots, 

 especially since few if any of them are to be found in the interior of 

 New Jersey. The occurrence at sea level of such northern forms as 

 Pupilla muscorum and Cochlicopa is anomalous. With them there 

 is one distinctly southern species, Vnllonia perspectira, never before 

 reported from New Jersey or any other point of the Atlantic coastal 

 plain. 



