34 THE NAUTILUS. 



meeting also had the j)leasure of a visit from Professor Wil- 

 liam A. Bryan, of the College of Hawaii, Honolulu. He gave 

 a very interesting account on the variation of species of 

 Melaniidae in different parts of the same stream. 



The January meeting was devoted to paleontology, Dr. 

 Hervey W, Shimer, speaking on the Cephalopoda and Pelecy- 

 poda, and Dr. Percy E. Raymond on the Gastropoda. 



In February Mr. Charles W. Johnson spoke on the varia- 

 tion of Litorina rudis, L. obtusata palliata and Thais lapUlius, 

 illustrated by a large series of specimens from various local- 

 ities on the New England coast and Europe. 



At the March meeting Dr. Edward C. Van Dyke, of San. 

 Francisco, spoke on collecting on the Pacific slope, and gave 

 some interesting points bearing on the zoogeography of the 

 region. It being the annual meeting, Mr. J. Henry Blake 

 was elected president to succeed Mr. John Ritchie, Jr. 



In April Mr. John Ritchie, Jr.'s subject was "Miscellany," 

 and Mr. Arthur F. Gray exhibited photographs and letters 

 of noted conchologists. 



At the May meeting an interesting discussion was pre- 

 sented by Professor Edward S. Morse on "Protective Colora- 

 tion," and by Mr. Francis N. Balch on "Problems of Colora- 

 tion in Mollusca. ' ' 



The field meeting of the year was to Fresh Pond, Cam- 

 bridge, classic collecting ground for fresh-water moUusks. 



E. G. Humphrey, Secretary. 



NOTES. 



Olivella biplicata angelena, var. nov. 



This variety differs from Sowerby's type in being more 

 delicate and slender, with callous not so heavy, spire more 

 elevated, sloping more gradually from the middle of the shell 

 to the apex. Sowerby's type came from Monterey and does 

 not occur near San Pedro living, but is found fossil there in 

 the Pliocene and lower Pleistocene. Variety angelena is 

 found fossil in both the upper and lower San Pedro beds of 

 the Pleistocene. 



