52 THE XAUTILUS. 



ui)on examination that they were brought liere in earth in flower 

 pot.s, though from what locality I could not fix. The banded form 

 was fii-st introduced, like that in the top of the box sent by this mail. 

 I have planted several colonies in this region and they have all 

 done well and are breeding rapidly; as evidence of this I collected 

 over 400 specimens in about one hour's time in a circle, the radius 

 of which was not more than 25 yards. I send by this mail a small 

 box containing the different varieties of color and stripe collected 

 up to date. If you can give me the names of any parties who would 

 be interested in them, it will give me great pleasure to send speci- 

 mens." 



The series com))rises many of the band combinations seen in 

 European specimens. The shells seem to be indistinguishable from 

 natives of the old world. The English conchologists have attempted 

 to catalogue and name the color varieties of these five-banded 

 snails — the Pentatcenia of Schmidt — and with a view to ascertaining 

 just what forms are represented in America. I sent the specimens 

 from Lexington to Mr. T. D. A. Cockerell, of West Cliff, Colorado, 

 who kindly furnished me the list of some fifteen named forms. Mr. 

 Cockerell writes : " The specimens could not in any way be dis- 

 tinguished from those of Europe. It will be interesting to compare 

 another series with the present from the same locality five or ten 

 years hence, and see whether the environment has greatly affected 

 the variation. Indeed, it would be good to collect and catalogue 

 say two hundred and fifty specimens every year, if they are nu- 

 merous enough." 



It would be interesting to observe whether the several color 

 varieties intercross freely, or prefer to breed with individuals of 

 their own color-pattern, and so perpetuate and intensify the color- 

 races. If the latter be true, it will tend to establish the theory of 

 " divergent evolution through cumulative segregation," by which 

 Mr. Gulick exjilains the divergence of the numerous species of 

 Achatinella inhabiting the same districts of the Sandwich Islands, 

 and living apparently under identical environments. 



SCALARIA ANGULATA IN NEW JERSEY. 



Ed. Nautilus, Dear Sir : 



In response to the request apiiended to the catalogue of Southern 

 New Jersey Marine Shells, } ublL-hed in the July number of the 





