OF WASHINGTON. 175 



in the coarse sculpture of the thorax, it recalls many forms to be 

 found in the family Chalcididce, in the subfamilies Eurytomina 

 and the Chalcidince, and it may possibly be the stem from 

 whence some of these forms originated. 



I shall enter more particularly into the subject in my mono 

 graph of the North America Cynipidae, a work upon which I 

 have now been engaged for several years, and at present shall 

 give merely a table of the subfamilies of one section of the 

 family, as follows : 



SECTION I CRYPTOGASTRI ASHMEAD. 



Table of Subfamilies. 



Abdomen short, globose or semiglobose, the second segment the long 

 est 3 



Abdomen ovate, compressed or subcompressed, often longly petiolated, 

 the apex usually pointed. 



Scutellum cupuliform, i. e., with a cup-like elevation on its disk 2 



Scutellum not cupuliform, of ordinary shape, or grooved, spined or 

 cone-shaped, and usually foveated at base. 



Abdomen subsessile or with a short petiole, the second segment shorter 

 than the third. 



Second abdominal segment not prolonged dorsally, not tongue- 

 shaped Subfam. I. Figitinae. 



Second abdominal segment prolonged dorsally, or tongue- 

 shaped Subfam. II. Onychiinae. 



Abdomen with a long petiole, the second segment somewhat longer 

 than the third. 



Petiole attached to the meta thorax between the hind coxze ; fourth 

 segment not longer than either the second or third. 



Subfam. Ill Anacharinae. 



Petiole attached to the metathorax far above the hind coxae; fourth 

 segment much longer than either the second or third. 



Subfam. IV Liopterinae. 



2. Second abdominal segment always the longest and usually occupying 



most of the surface ; hind tibiae with two spurs . Subfam. V Eucoelinae. 



3. Scutellum rounded, smooth, convex; hind tibiae with one spur. 



Subfam. VI Allotriinse. 



SUBFAMILY IV LIOPTERIN.E. 



This subfamily contains but two genera, which may be separated 

 as follows : 



Table of Genera. 

 Discoidal nervure interstitial with the median nervure ; $ antennae 



14 9 i3-jointed Liopteron Perty. 



