Wants and Exchanges 



Subscribers and others are urged to use these columns to make 

 their wants known. As the Journal goes to all joarts of the 

 world we hope to make this a very useful feature of the publi- 

 cation. Exchange notes are free to subscribers. 



Wanted — Myriopods from all parts of the world. Will name, 

 exchange or purchase. R. V. Chamberlin, Mu. Comp. Zoology, 

 Harvard Univ., Cambridge, Mass. 



AYill exchange insects of any order from Southern California, 

 for Microlepidoptera from any part of North America, prefer- 

 ably pinned, with complete data concerning capture. Fordyce 

 Grinnell, Jr., Pasadena, Cal. 



Hemipteea — California Homoptera and Heteroptera, includ- 

 ing all families, exchanged for specimens from all parts of the 

 globe, but especially from North America. — E. 0. Essig, Secre- 

 tary State Commission of Horticulture, Sacramento, Cal. 



Wanted — Cephalopods (in alcohol) ; Chitons (in alcohol or 

 dry) ; shells of West American MoUusca ; zoological literature. 

 Offered: West American and other molluscan shells; zoolog- 

 ical pamphlets, mainly on the Mollusca. S. S. Berry, 502 Cajon 

 St., Eedlands, California. 



California Syrphidn?, Aphididfe to exchange for non-Califor- 

 nia SyrphidfE. W. M. Davidson, Walnut Creek, Cal. 



Wanted — For exchange, papers on marine and fresh-water 

 Protozoa. Albert L. Barrows, Department of Zoology, Univer- 

 sity of California, Berkeley, Cal. 



Wanted — Information on any mite-papers for sale or ex- 

 change that have an economic bearing. H. V. M. Hall, Room 8, 

 Court House, San Diego, Cal. 



Wanted — Specimens and separates relating to the pseudo- 

 scorpions, in exchange for local species. M. Moles, Claremont, 

 Cal. 



