THE NAUTILUS. 1)1 



(1.) Mut. rufesceits, Duniont and Mortillet. Reddish, without 

 any distinct spots or lines. Sixteen specimens. 



(2.) Mut. brunneus, Taylor. Very dark-brown; one or two are 

 so nearly black that they could be taken for mut. niyer, Morelet. 

 Eight specimens. 



(3.) Mut. semirufus, nov. Head and mantle rufous ; body poster- 

 ior to mantle almost black. Two specimens. This indicates that 

 the coloration of the head and mantle, and that of the body, may be 

 separately inherited, though more frequently the color of the animal 

 above is uniform. 



The common English forms pallida Schrenk, and retfculata 

 Miiller, are absent. 



MARGARITANA MARGARITIFERA IN PENNSYLVANIA. 



BY CHAS. H. CONNER. 



A few weeks ago, I had the pleasure of receiving a few specimens 

 of Margaritana margari.tif era Linnseus, which were taken trom Still 

 Creek, near Quakake, Schuylkill Co., Pa. As I believe this species 

 of fresh-water mussels has not been reported living in Pennsyl- 

 vania, I send you this note. 



Mr. Frank M. Ebert who kindly forwarded the specimens to me, 

 states that they are found in the several streams of the vicinity. He 

 and others have taken a great quantity of pearls of all sizes and 

 grades from them. Though Mr. Ebert. has collected the species for 

 some time, he informs me that he has never found a gravid specimen. 



The foot and gills of the specimens examined are brownish, the 

 rest of the body being white. 



NOTES AND NEWS. 



ARION CIRCUMSCRIPTUS, JOHNS. (FASCIATUS Nn.ss., pars). 

 Last June I found this European slug in abundance on Goat Island, 

 Niagara Falls, N. Y. It appears to be an addition to the fauna of 

 New York, but Dr. N. L. Britton. to whom I mentioned the occur- 

 rence, said he was sure lie had heard some report of it. The speci- 

 mens were of the usual grey color, with narrow bands and a slight 

 keel. In 1887 I searched the same locality, but at that time the 

 Arion was apparently absent. T. D. A. COCKEKELL. 



