Moesz Gusztáv - Soós Lajos (szerk.): A Magyar Természettudományi Múzeum évkönyve 28. (Budapest 1934)

Hungerford, H. B. ; Evans, N. E.: The Hydrometridae of the Hungarian National Museum and other studies in the family. (Hemiptera)

uncler Hijdrometra vittata STAL as proposed by DISTANT (4) and accepted by OSHANIN. A few types cannot be located. Tn case ot Hijdrometra papuana KIRKALDY for instance, the type has been destroyed. The pin and label were in tlie KIRKALDY collection but the insect was gone when his collection was examined at Washington, D. C. some years ago. Professor R. GESTRO has been kind enough to look for it in the Museo Civico di Storia Naturale, Genova, and reports that no specimens of this species are present in his Museurn. A few other species are represented by partially mutilated types or by female types that make the fixation of these species difficult. A more worthy monographic revision of this genus must await ihe assemblage of more extensive collections from manv countries. In arranging the keys and the notes and descriptions of species, we have attempted to place closely related species together. In some sections of the keys it will be necessary to possess male specimens. We ha^e figured both sexes whenever possible. The

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majority of the drawings were made by the junior author. The others were made for us by Dr. KATHLEEN DOERING, Assistant Professor of Entomology in the University of Kansas. The species illustrated by Miss DOERING are marked by an asterisk. Acknowledgme n t s. We wish to acknowledge our indebtedness and to extend our thanks to the many friends who have made this paper possible either by the loan or gift of specimens, or by extending to the senior author the opportunity of studying types and other specimens while visiting the Museums in their charge. For the undetermined borrowed material we are indebted to the following: To Dr. G. HORVATH in charge of the Hemiptera at tbe National Museum of Hungary whose connection with and interest in this paper is mentioned in our opening paragraph. The senior author desires especially to express his gratitude to Dr. HORVATH for his generosity in loaning the material,he had studied, and to his assistant, Mr. J. UJHELYI, who sacrificed his own personal work tomake the writer's hriei two weeks in Budapest most profitable; To Dr. F. MAIDL of the Vienna Museum; To Dr. BOUVIER and Dr. SEGUY of the Paris Museum; To Mr. W. E. CHINA in charge of the Hemiptera at the British Museum: To Mr. W. L. MCATEE at that time in charge of the Hemiptera of the U. S. N. M.; To Dr. Y. SJOSTEDT and Dr. A. ROMAN of the Stockholm Museum. Dr. A. ROMAN most kindly reexamined types for us in regard to characters unfortunately OYer-