60 THE NAUTILUS. 



NOTES. 



ViviPARUS IN Philadelphia — A find which may be of interest 

 to readers of the Nautilus was made by the undersigned a few 

 weeks ago near Horticultural Hall in Fairmount Park. The species 

 was Viviparus contectus (Mill.). It has not before been reported 

 from Philadelphia, and as far as I know not from the State. The 

 females were larger than the males and outnumbered them. Most 

 of the adult females were pregnant. The sex was determined in 14 

 males and 39 females. In 18 specimens it could not be determined 

 readily. The specimens are in my own collection and that of the 

 Academy of Natural Sciences. The lily pond in which they were 

 collected had just been restocked with plants, and Mr. Pilsbry, to 

 whom I owe the identification, suggested that the snails had been 

 introduced on the plants. Two years ago they were unknown in 

 the same pond. — Joshua T. Bailt, Jr. 



We have to announce the death, July 28th, at Los Angeles, Cal., 

 of Dr. R. E. C. Stearns, in his 82d year. Also, of Mr. William G. 

 Binney, on July 25th, at his home, 222 East Union St., Burling- 

 ton, N. J. 



PUBLICATIONS RECEIVED. 



A Preliminary List of the Unionid^ of Western Penn- 

 sylvania, with New Localities for Species from Eastern 

 Pennsylvania. By Dr. A. E. Ortmann (Annals of the Carnegie 

 Museum, Vol. V, pp. 178-210, 1909). An interesting review on 

 the geographical distribution of the Unionidce in Pennsylvania. 

 Some 46 species are recorded from the Ohio River drainage, 17 

 from the Lake Erie drainage, and 14 from the Atlantic drainage. 



The Destruction of the Fresh-water Fauna in Western 

 Pennsylvania. By Dr. A. E. Ortmann (Proc. Amer. Phil. 

 Soc, Vol. 48, pp. 90-110, 1909). A paper of general interest to 

 all zoologists, showing clearly with the aid of a map the great 

 changes which have taken place in comparatively few years. Situ- 

 ated in the great oil and coal region, this section has suffered more 

 than areas where the streams are only polluted by the sewage of the 

 large towns and cities. 



Shells of Maine, a Catalogue of the Land, Fresh-water 

 AND Marine Shells of Maine. By Norman Wallace Ler- 

 MOND. An up-to-date list of the shells of Maine, containing 403 

 species and 38 varieties, with the principal synonymy and their dis- 

 tribution. The introduction contains a review of the work done by 

 previous authors and others. Privately printed by the author at 

 Thomaston, Maine. 



