126 THE NAUTILUS. 



HELICES COLONIZED IN HEBKIMER CO., N. T. 



BY WILLIAM B. MARSHALL. 



Mr. Albert Bailey recently sent me specimens of Helix elevata, 

 Helix Mitchelliana, Helix profunda and Helix exoleta from localities 

 in Herkimer Co., X. Y. The following notes bearing upon the 

 occurrence of these species in Herkimer county are extracted from 

 a letter received from Mr. Bailey : — 



" I think it will be necessary for me to explain the presence of 

 certain Helices in Herkimer Co., N. Y. Several years ago (about 

 20) Dr. James Lewis, of Mohawk, colonized several species from 

 Ohio in a branch of the ravine leading from Ilion to Cedarville. 

 The specimens sent you are the offspring of the imported species. 

 Of Mesodon exoleta Binn., I have collected many specimens — in fact 

 they have become numerous. Mesodon Mitchelliana is also quite 

 plentiful. Of Mesodon elevata I have found only nine specimens. 

 Of Mesodon 'profunda I have six perfect specimens and some 

 immature. Of Mesodon multilineata I have not succeeded in finding 

 any. I have had the good fortune to find one reversed or left 

 handed Mesodon exoleta." 



NOTES ON UNIO CORTJSCUS GOULD. 



BY BERLIN H. WRIGHT. 



In the Proc. of the National Museum, Vol. xv., page 419, Mr. 

 Chas. T. Simpson, of the Smithsonian Institution, makes some notes 

 on this species and others which he considers identical with it. He 

 classes my beautifully rayed chestnut U. fryanus with the rayless, 

 pitchy-black species, which Dr. Gould described in Proc. Bost. Soe. 

 Nat. Hist., 1856, p. 15, as U. cornscu.'<. The description says " epi- 

 dermide piceo" or tar-like, " solida," or solid, '^transverse ovata 

 ad dorsum lata," or transversely ovate and broad behind. The 

 habitat is given as the " St. John's River, near Beresford, Florida." 

 The author remarks that it might be taken for a young U. bnclleyi 

 Lea, but is more solid, less angular and darker colored, stronger 

 hinge. 



