Exchanges and Determinations 



Thysanoptera and I'syllidac of the two Americas, including many cotyiK-s 

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

 determinations of new collections made on request. 



n. K. Cr.vwford, Pomona College. Claremont, California. 



I'rosopiiUu- '1 X.'ith \incrita riinl iHllitrs <>t Mi-xirn tn exchange for 

 species not in my collection. Prompt determinations of western and south- 

 western material made on request. .Also named Californian Noctuidae — some 

 new — to exchange for West Coast sp'C'cs not in my collection. 



C. \V. Mktz, Pomona Cnllcsjc, Claremont, California. 



\amcd Cocckiiic, . \ phididac. and Coccincllidac of California to exchange 

 for named species of these groups from other regions. 



v.. O. Kssic, Horticultural Commissioner, Santa Paula. California 



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

 similar material from other parts of the world. 



H. V. M. Hai.i., Pomona College. Claremont. Californi.i 



Alcochariiujc ( Stai)liy!inidae ) of the world. Will Iniy and exchange. 

 Dr. .a. Fknyks. Box W. Pasadena. California. 



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

 Xoctuidac. \\'ill endeavor to determine species sent for names. Will name 

 any North American butterflies for privilege of retaining a set. 



F. nRTNNKi.t . 1r.. T'72 X. ^Tarengo Ave.. Pasadena. California. 



Fine named .American Cicadidae to exchange for Cicadidac from any 

 part of the world. 



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

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

 Mexico, Central or South .America. 



Also named Californian and Mexican Colcoptcra to exchange for named 

 Southwestern or ^fexican Coccincllidac. Scarabacidac. Ccrnmbycidac. or 

 Rhynchophora. 



C. F. R.\KEK. Pomona College. Claremont. California. 



