EXCHANOES 



This column is intended only for wants and exchanges, not for 

 advertisements of goods for sale. Notices not exceed- 

 ing three lines free to subscribers. 



These notices are continued as long as our limited space will allow; the new 

 ones are added at the end of the column, and only when necessary those at the 

 top (being longest in) are discontinued. 



Wanted Species of Homoptera, Hemiptera and Orthoptera not 

 represented in my collection in exchange for duplicate material of 

 these orders from South Dakota. List of duplicates on application. 

 H. C. Severin, South Dakota State College, Brookings, South 

 Dakota. 



Buprestidae, Cleridae, and Carabinae wanted from U. S. or 

 Buprestidae of the world. Will collect insects of any group (except 

 Lepidoptera) in exchange or pay cash. Alan S. Nicolay, 416a Grand 

 Ave., Brooklyn, New York. 



For Exchange A large number of live cocoons of .Callosamia 

 promethea, C. cynthia and P. cecropia for other pupf^e or Lepi- 

 doptera. D. C. Heim, Sunbury, Pa. *j 



Wanted to Exchange N. A. Coleoptera for same not m my col- 

 lection. Carl Selinger, 4419 Dover St., Chicago, 111. 



Wanted for Cash or Exchange Catocala eggs, also brilliant 

 colored butterflies and moths for trays. Mrs. Robert Milde, Lewis- 

 ton, Minn. 



Syrphidae from all parts of North America wanted. Mono- 

 graphing the family. C. H. Curran, Department of Entomology, 

 University of Kansas, Lawrence, Kansas. 



Will collect in all orders except Lepidoptera, in exchange for 

 Cerambycidae (longicorn beetles) and Pentatomidae (stink-bugs). 

 G. Chagnon, P. O. Box 521, Montreal, Canada. 



I will collect Coleoptera and Lepidoptera in southwest Arkansas 

 for those so interested.- Miss Loyise Knobel, 417 West 2nd Avenue-, 

 Hope, Arkansas. 



Correspondence solicited from anyone desiring general collections 

 of insects, to be made in Costa Rica. Austin Smith, Apartado 412, 

 San Jose, Costa Rica. 



Wanted For cash, during winter of 1922 and 1923. pupae of 

 Saturniid moths. Please state species, quantity and price. P. Rau, 

 2819 S. Kingshighway, St. Louis. 



Wanted Am working on a Revision of the Buprestidae of the 

 \Yest Indies and would like to examine any material in this family 

 from that region. W. S. Fisher. U. S. National Museum, Washing- 

 ton. D. C. 



For Exchange A large number of Papilio Turnus, P. Cresphontes 

 and P. Ajax pupae, or the same specimens in papers, for other 

 pupae or Lepidoptera. Carl Selineer, 4!l ( .> Dover St., Chicago, 111. 



Wanted Dytiscidae not in my collection, in exchange for local 

 specimens. Offer Coelumbus seHatus, Oregonus, etc. F. S. Carr, 

 li <).)<) I2:;rd St., Edmonton, Alberta. 



Coleoptera for exchange Cicin. generosa, hirticollis, modesta, 

 sexguttata, 12-pnnctata. Saperda popnlnea, Uro. fasciata, Donacia 

 Mihtilis, palnnta. texana-minor, biimpressa, refuscen>. Krncst Bay- 

 l ; s. :.OI 1 Saul St., Philadelphia, Pa. 



