LIST OF ILLUSTRATIONS 



PLATES 



Tertiary insects from Argentina 



By T. D. A. Cockerell 



• ■ ' Facing page 

 1. Tertiary insects from Argentina 6 



Systematic notes on and descriptions of North American wasps of 



THE subfamily BRACHYCISTIINAE 



By J. R. Malloch 



1. Details of Brachycistiinae, Psammocharidae, and Cyphotinae 28 



2. Structural characters of Brachycistis males 28 



3. Hypopygia of Brachucistls males 3? 



4. Hypopygial characters of Brachijcistis, Cyphotes, and Myrmosa males. 2S 



Crane flies from the Maritime Province of Siberia 

 By Charles P. Alexander 



1. Crane flies from Siberia 23 



Teirtiary insects from Kudia River, Maritime Province, Siberia 

 By T. D. a. Cockerell 



1-2. Tertiary insects from Kudia River, Siberia 16 



North Amesiican species of two-winged flies belonging to the tribe 



Mn.TOGRAMMIM 



By Harry W. Allen 



1-5. American species of two-winged flies of the tribe Miltogrammini 104 



FiEa-D notes on gall-inhabiting Cynipiu wasps, with descriptions of 



new species 



By Lewis H. Weld 



1-8. Gallflies of the family Cynipidae 128 



XI 



