Wants and Exchanges 
Subscribers and others are urged to use these columns to make 
their wants known. As the Journal goes to all parts of the 
world we hope to make this a very useful feature of the publi- 
cation. Exchange notes are free to subscribers. 
Wantep—Myriopods from all parts of the world. Will name, 
exchange or purchase. R. V. Chamberlin, Mu. Comp. Zoology, 
Harvard Univ., Cambridge, Mass. 
Will 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. 
Hemretera—California Homoptera and Heteroptera, includ- 
ing all families, exchanged for specimens from all parts of the 
globe, but especially from North America.—E. O. Essig, Secre- 
tary State Commission of Horticulture, Sacramento, Cal. 
Wantep—Cephalopods (in alcohol); Chitons (in alcohol or 
dry); shells of West American Mollusea; zoological literature. 
Offered: West American and other mollusean shells; zoolog- 
ical pamphlets, mainly on the Mollusca. S. 8S. Berry, 502 Cajon 
St., Redlands, California. 
California Syrphide, Aphidide to exchange for non-Califor- 
nia Syrphide. W. M. Davidson, Walnut Creek, Cal. 
Wantrep—For exchange, papers on marine and fresh-water 
Protozoa. Albert L. Barrows, Department of Zoology, Univer- 
sity of California, Berkeley, Cal. 
Wantep—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. 
Wantep—Specimens and separates relating to the pseudo- 
scorpions, in exchange for local species. M. Moles, Claremont, 
Cal. 
