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Leading Articles in Volume XII 



Class I, Hexapoda ; Order I, Hymenoptera. 



ASHMEAD, \Vm. H., 



A List of the Hymenoptera of the Philippine Islands, with 

 Descriptions of New Species ..... i 



Descriptions of New Hymenoptera from Japan . 65, 146 

 Titus, E. S. G., 



Notes on Osmiinae, with Descriptions of New Genera and 

 Species . . . . . . , .22 



Viereck, H. L., and Cockerell, T. D. A., 



The Philanthidae of New Mexico . . . 84, 129 



Class I, Hexapoda ; Order II, Coleoptera. 

 Beyer, Gustav, 



Insects Breeding in Adobe Walls .... 30 



A Few Notes on Brenthidse . . . . .168 



Chittenden, F. H., 



Biologic Notes on Species of Languria . . .27 



A Species of the Tenebrionid Genus Latheticus in the 



United States . . . . . . .166 



Davis, Wm. T., 



Caterpillars Attacked by Histers . . . .88 



Powell, P. B., 



The Development of the Wings of Certain Beetles and 

 Some Studies of the Origin of the Wings of Insects . 237 

 Schaeffer, C, 



New Genera and Species of Coleoptera . . .197 



Class I, Hexapoda ; Order IV, Diptera. 



COQUILLETT, D. W. , 



Diptera from Southern Texas with Descriptions of New 

 Species . . . . . . . .31 



A New Ceratopogon from Brazil . . . '35 



