Exchanges and Determinations 



Tliy.ianoptcra and Psyllidae of the two Americas, including many cotypes 

 to excliange for material in these groups from any part of the world. Prompt 

 determinations of new collections made on request. 



IV F.. Cii \«i<iiii), .st.iiifiinl I'lini rsitv I' () . ('iiiiforiii;i 



\\';inti(l i)y piin-jiasr or f.\<.'lmii>{c. pupiif, cofiioiis or rgut of niiv Caluralae 

 of till- Wist and South, especially California and Mtxico. 



.fosKiMl .^EVKR. S.S.'> K. ii)th .St.. Niw York Citv.. 



Named Coccidae, Aphididae. and Coccinellidae of California to exchange 

 for named species of these groups from other regions. 



E. (). Ks.'iiii. I)r|)iity Hortifidtiiral C'oiiiiiiissioiiiT, .Sneraiiu-iito, Californin. 



Named Californian Acarina (Mites and Ticks), mounted on slides, for 

 similar material from other parts of the world. 



H. \'. M, TIm.i.. Pomona College, Claremont. California 



Aleocharinac (Staphylinidae) of the world. Will buy and exchange. 

 Dr .\. FenyES, Box W, Pasadena, California. 



Wanted by exchange. Moths, from the Western States, especially 

 Noctuidac. Will endeavor to determine species sent for names. Will name 

 any North American butterflies for privilege of retaining a set. 



F. GrinnEU.. Jr.. >72 N. Marengo Ave., Pasadena, California. 



Fine named .AiiK-rican Cicadidae to ixchangc for Cicadidac fmm any 

 part of the world. 



Named Californian and Mexican Diptera and Orthoptera (some new) to 

 exchange for desiderata in these groups from other Western States or from 

 Mexico, Central or South .Xmerica. 



Also named Californian and Mexican Coleoptcra to exchange for named 

 Southwestern or Mexican Coccinellidae, Scarabaeidae. Cerambycidar. nr 

 Rhynclwphora. 



C. F. R.\KKR. I'omona College. Claremont. ( Mif'^r"!'. 



