SYNOPSIS OF PENTATOMID BUGS OF THE SUBFAMILIES 

 MEGARIDINAE AND CANOPINAE 



By W. L. McAtee and J. R. Malloch 



Of the Un-ited States Biological Survey 



INTRODUCTION— ACKNOWLEDGMENTS 



Manuscript covering most of the species included in the present 

 report was completed in July, 1926. It was based primarily on mate- 

 rial contained in the National Collection (of which W. L. McAtee is 

 acting custodian of Hemiptera), supplemented by loans from the 

 Carnegie Museum in Pittsburgh (through Hugo Kahl), American 

 Museum of Natural History (through H. G. Barber), the Museum 

 National d'Histoire Naturelle de Paris (through Dr. E. L. Bouvier 

 and E. Seguy) , and the Deutsches Entomologisches Institut (through 

 Dr. Walther Horn). In the spring of 1927 the United States Bureau 

 of Entomology made it possible for W. L. McAtee to visit various 

 European museums where tj^pe and other material could be con- 

 sulted. Museums from which material is cited in the present synopsis, 

 together with the name of the officer in charge of Hemiptera or more 

 inclusive groups, are: Magyar Nemzeti Museum, Budapest (Dr. G. 

 Horvath) ; Zoologisches Museum, Johann Kasimir Universitat, Lwow 

 (Dr. Jan Hirschler) ; Museum fur Naturkunde, Berlin (Dr. W. 

 Ramme) ; Zoologisches Museum, Christian Albrecht's Universitat, 

 Kiel (Dr. A. Schroder) ; Universitetets Zoologiske Museum, Copen- 

 hagen (Dr. W. Lundbeck) ; Naturhistoriska Riksmuseet, Stockholm 

 (Dr. B. Y. Sjostedt) ; Museum Zoologici Universitatis, Helsingfors 

 (Dr. Richard Frey) ; and the British Museum of Natural History, 

 London (W. E. China). We gratefully acknowledge these loans, and 

 assistance from the officials listed, and wish to record our apprecia- 

 tion of favors in connection with the work received also from J. 

 Ujhelyi, of Budapest; Dr. K. L. Henriksen, of Copenhagen; and Dr. 

 Hakan Lindberg, of Helsingfors. The museums listed here are 

 referred to in the text merely as "Paris Mus.," "Lwow Mus.," and 

 the like, rather than by their full designations. 



No. 2721.— Proceedings U. S. National Museum, Vol. 72. Art. 25 



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