THE NAUTILUS. 57 



(Mississippi to Georgia), but this has a rather sharp posterior 

 ridge. Eastern excavata are also much lighter in color, but I 

 have specimens from Jackson, Miss., which are as dark assatur. 

 On account of the glochidia, I have the suspicion, that satur 

 might be a good species. Intergrading specimens are not known. 



NOTES. 



Recently the Boston Society of Natural History received 

 from Prof. Edward S. Morse a pamphlet with the following 

 title on its cover — " Publications of the 0. G. B. III. Mol- 

 LuscA OF Cincinnati. Cincinnati: L. A. Burdsal, Printer. 

 1876." Wishing to know the origin of this publication, our 

 Librarian wrote to the Cincinnati Society of Natural His- 

 tory and the following information was received from Mr. 

 Lester D. Collier, through the kindness of Mr. Charles Dury. 

 "The pamphlet described was published by some Woodward 

 High School boys and the Burdsal mentioned was one of them. 

 The letters 0. G. B. stands for " Our Geological Boys ". Wm. 

 Doherty was one. I was well acquainted with these boys, who 

 were much interested in geology. The list of shells was made 

 by them from specimens collected here and mostly by them. 

 Some of them are dead and most (if not all) of them, gone 

 from here. This is my recollection of it". The paper con- 

 tains twelve pages, including the title page, " List of the 

 mollusca existing in the neighborhood of Cincinnati, Ohio". 

 The preface is dated August 6, 1876. The list contains 103 

 species. — C. W. Johnson. 



Shells of Mt. Monadnock, N. H. — Mt. Monadnock, where 

 I am staying (for the last seven summers) being mostly spruce- 

 clad and often very dry during the late summer, is a very poor 

 collecting ground for snails. However the excessively wet last 

 July has started them out and by the energetic collecting of 

 Miss Rebecca Kite and myself we have succeeded in getting 

 representatives of the following species from between 2,000 and 

 3,000 feet altitude, all rare. 



Polygyra albolahris Say. 



