NOTES ON THE DISTRIBUTION OF SHELLS, NO. IlL 553 



fore known of its occurring so far north, not having heretofore collected it north 

 of Eureka Springs, Arkansas. 



21. Pupa pentodon, Say. — A few have been found in open timber under logs 

 and sticks. 



22. Pupa fallax. Say. — Found in stony places, not only under the larger 

 stones, but among small ones where they are thickly imbedded in dirt, a space, 

 of a foot square, sometimes furnishing two or three hundred of this and the next 

 species. 



23. Pupa armifera, Say. — Found along with the last, and also under logs, 

 not imbedded in the ground but above it, and generally encrusted with dirt. 



24. Pupa contractu. Say. — Rather plenty. 



25. Pupa rupicola, Say. — Not common. 



26. Pupa nordeacea, Gabb(?). — A very few of what seem to be this species 

 were found, but the identification is not certain. 



27. Pupa (?) — A very small Pupa or a ^r/z^^, not yet determined. 



28. Succinea lineata, W. G. Binn. — In the summer of 1881, a few speci- 

 mens of what seems to be this species, were found on roots of trees which were 

 standing partly in water. Several searchings during the past summer failed to 

 find a single specimen. 



29. Succinea avara, Say. — A few were found along the preceding. 



30. Succinea ovalis, Gould. — Found on the under side of logs in bottoms in 

 open timber The largest were seven mm in length, the typical specimens being 

 given as fifteen mm long. 



31. Tebenophorus carolinensis, Bosc. 



32. Carychium exiguum, Say. — Some years ago I found about forty under 

 one log in a creek bottom, but have never since found any. 



The water shells are much more numerous than the land shells, though there 

 are not so many species. I have collected the following : 



33. Limncea columella, Say. — The only place where I found this was in a 

 fountain in the yard of Mr, O. A. Crandall, the eggs having evidently come 

 from Flat Creek through the pipes of the water-works, a distance of two or three 

 miles. In the same fountain occurred Physa heterosirophe, Plaiiorbis trivolois, and 

 a Sphcereum. 



34. Limncza desidiosa. Say. — On Spring Fork close by a spring I found this 

 species in abundance, but have not seen it at any other locahty. The specimens 

 were eight to ten and a half mm in length. 



35. Limncza humilis, Say. — Some five years ago I found great numbers in 

 a small wet-weather pond by the roadside, but when I next visited thelocality it had 

 dried up, and there has not since been any at that place. They were six mm in 

 length and quite solid. The only other place where I obtained any was on Flat 

 Creek, where they were smaller, thinner and scarcer. 



36. Physa gyfina, Say.— Very fine specimens of this were found a few 

 years ago in a wet-weather pond which soon after dried up. They were twenty 

 mm in length with apex eroded so that only three full whorls remained. These 



