THE NAUTILUS. 83 



NOTES. 



HELIX HORTENSIS: A CORRECTION IN DISTRIBUTION. When 

 the first survey of Casco Bay was made the authorities should not 

 have allowed the inhabitants there to keep three Rams, two Brown 

 Cows and three Mark Islands. If not a hindrance to navigation, 

 these certainly add confusion to the records bearing on geographical 

 distribution. 



The "Brown Cow Island," referred to by myself and others, 

 should be Western Brown Cow Island. This island is divided into 

 an eastern and a western portion, the latter being the larger and the 

 one that has been referred to in former papers as Brown Cow Island. 

 Although Helix hortensis is also found in the eastern portion, it is 

 less abundant there. Eastern Brown Cow is an entirely separate 

 island about ten miles east of Western Brown Cow. On this island 

 Dr. J. A. Cushman also found a few H. hortensis, all belonging to 

 the variety subglobosa. 



The "Swan Island" mentioned on page 63 of THE NAUTILUS 

 for October, should have been Seal Island. It is situated on the 

 eastern side of Cape Smallpoirit. This should not be confused with 

 the Seal Island, or Seal Rock of the Matinicus group, where H. 

 hortensis is also found. C. W. JOHNSON. 



LTMN^EA (RADIX) AURICLLARIA IN CHARLES RIVER, BOSTON, 



MASS Since Mr. W. F. Clapp recorded the occurrence of this 



species in the Charles river (NAUTILUS, Vol. XXVI, p. 116), it 

 seems to have greatly increased. My young friend, P. S. Reming- 

 ton, has found it in numbers on the Boston (Allston) side near the 

 Speedway. C. W. J. 



MR. T. H. ALDRICH has given his collection of shells, by estimate 

 not far from 20,000 named species, to the Museum of the Alabama 

 Geological Survey. The collection was begun as far back as 1859 

 in a New York village where Mr. Aldrich passed his boyhood. It 

 includes not only his own gatherings and exchanges from all parts 

 of the world, but many large purchases, notably the Mauritius shells 

 collected by Col. Nicholas Pike, a very large and fine set ; the Ber- 

 muda and Nova Scotia collections of J. M. Jones ; the Parker cabi- 

 net of about 5,500 listed species; all the conchological collections 



