148 PSYCHE [August 



The numerous genera into which these wasps are now divided, may be 

 recognized by the aid of the following table : — 



Table of Genera. 



Apterous or subapterous forms ........ i 



Wings fully developed . . . . . . . . . .11 



1. Mesonotum without, or with indistinct, or incomplete parapsidal furrows, never 

 deep or sharply defined ......... 2 



Mesonotum 7vith deep, sharply defined parapsidal furrows ... 6 



2. Mesonotum with traces of furrows, the furrows, however, never complete 3 

 Mesonotum smooth, polished, without a trace of the furrows ; face smooth, 

 highly polished. 



Antennae 14-jointed, the third joint not quite so long as the two following 

 united, joints 10-13 a little longer than thick; scutellum small, rounded, 

 convex, with a slight transverse grooved line at base ; claws of hind tarsi 

 simple ; abdomen bare (agamous 9 ) . . Xystoteras Ashmead 



(Type X. voUutelae Ashm.) 



3. Antennae 14-jointed . . ' . . . . . . . . 4 



Antennae 13-jointed .......... 5 



4. Scutellum triangular or conical, as viewed from above, the apex obtuse, or 

 ending in an obtuse thorn, the base not separated from the mesonotum by a 

 grooved line ; body very hairy ; face shagreened, opaque ; antennae very long ; 

 the joints cylindrical, 3 to 5, or to 6, very long, the following gradually 

 shortening ; claws of hind tarsi with a tooth towards base beneath ; sides of 

 abdomen usually densely pubescent (agamous 9 ) . . Philonix Fitch 



=r Acraspis Mayr 

 (Type P. fulvicollis Fitch.) 

 Scutellum rounded or semicircular, always rounded off posteriorly, with a 

 slight arcuate furrow or depression at base, the base separated from the 

 mesonotum by a delicate grooved line and carina; face and mesonotum 

 alutaceous or shagreened ; antennae long, the third joint as long or nearly as 

 long as joints 4-5 united, joints 6-13 a little more than twice as long as thick; 

 claws of hind tarsi simple, without a tooth beneath (agamous 9 ) 



Zopheroteras Ashmead 

 (Type Acraspis vaccinii Ashm.) 



5. Scutellum rounded, with indications of foveae on either side at base, or at least 

 depressions, the base separated from the mesonotum by a delicate transverse 

 grooved line ; face shagreened or coriaceous, the mesonotum subopaque or 



