36 THE NAUTILUS. 



able data on the south-eastward distribution of Arionta are pre- 

 sented. 



Dr. H. von Ihering has been appointed Director of the Zoolog- 

 ical Department of the Museum at San Paulo, Brazil. 



In electing officers of the American Association of Conchologists 

 for the ensuing year, John H. Campbell was elected President ; 

 John Ford, Vice-President ; Chas. W. Johnson, Secretary. 



The death of the well-known Zoologist, Carl Semper, of Wiirtz- 

 burg, Germany, on the 29th of May, has been announced. 



WiLLARD M. Wood, of San Francisco, intends very soon to make 

 an eastern trip, visiting Chicago, New York, Philadelphia and 

 Washington. 



Mr. H. E. Sargent, formerly of Woodville, Alabama, is in Phila- 

 delphia, where he proposes to spend some time in biological work. 



A " Reference List of the Land and Fresh Water Mollusca 

 of New Zealand " has been published by Messrs Chas. Hedley of. 

 Sydney, N. S. Wales, and H. Suter of Christchurch, New Zealand. 

 It forms an extremely useful index to that fauna, and is indispen- 

 sable to those who desire to understand the peculiar genera of Aus- 

 tralasia. 



EXCHANGES. 



Wanted, about 25 specimens of any one species of Dentalium ; 

 also live specimen of Zonites elliotti, demissiis, intertextus, gularis, 

 internus and nitidus. Offered, British L. and Fr. W. and North 

 American L. and Fr. W. shells, also dart of Zonites ligerus Say. — 

 Robert Walton, Houghton street, Lower Roxborough, Philadelphia, 

 Pa. 



M. M. ScHEPMAN, Rhoon, near Rotterdam, Holland, has, to 

 exchange, many East Indian sea shells. Send list and receive mine. 



For exchange, 200 species of land and fresh water shells, from 

 British India, Burmah and Ceylon ; also large collection of marine 

 shells from various parts. Offers solicited in land and fresh water 

 shells. — Miss J. E. Linter, Arragon Close, Twickenham, England. 



