THE NAUTILUS. 117 



Mr. Campbell was also a member of several other prominent asso- 

 ciations, among which may be mentioned the Academy of Natural 

 Sciences, Philadelphia Atheneum, and Pennsylvania Historical So- 

 ciety. He was the author of several valuable papers, but perhaps 

 the chief literary work of his life is the History of the Hibernian 

 Society, a noble volume published about four years ago. 



To his bereaved family we present an assurance of our deepest 

 sympathy, trusting that He who tempers the winds to the shorn lamb 

 will comfort and cheer their sorrowing hearts. J. F. 



NOTES AND NEWS. 



PLANOEBIS NAUTILEUS L. IN AMERICA.- The occurrence of this 

 well-known European species in the United States has hitherto rested 

 upon its discovery at Ann Arbor, Michigan, by De Tarr and Beecher, 

 who described it as new under the name of Planorbis costatus. 



Several years ago, among some Vallonia pulehella Mull., purport- 

 ing to come from Eaton, N. Y., a single specimen of this Plunorbis 

 was found. The collector of these specimens was unknown, so that 

 no further information was obtainable, and, in view of the possibil- 

 ity of some accidental mixture of specimens, I have refrained from 

 making a record based on a single example, which might be erron- 

 eous. Recently, however, I have received specimens of this species 

 about which there can be no doubt, and which, taken in connection 

 with the Michigan locality, render the New York citation fairly 

 probable. Mr. O. A. Nylander, of Caribou, Me., is the fortunate 

 discoverer of the new locality for this beautiful little species. He 

 writes that he found it in Barren Brook, Aroostook County, Maine, 

 in three or four inches of water under logs and bark associated with 

 Planorbis parvus, bicarinatus and trii'olns. It hardly seems possible 

 that in this locality, so remote from foreign commerce, the species 

 could have been introduced by human agency. And in this con- 

 nection it is a fact of some significance, that in the same brook is 

 found a small Pisidlum, which Dr. Sterki saj'S is apparently identi- 

 cal with the European P. milium Held., and that the only other 

 known American locality for that species is northern Michigan. 



It is possible that the small size of the shell and its superficial re- 

 semblance to a very young Planorbis exaentus Say, has caused it to 

 be overlooked by collectors, and that it will be found to have sub- 

 stantially the same range over the northern part of this continent as 

 other circumpolar species. BRYANT WALKER, Detroit, Mich. 



