166 THE CANADIAN ENTOMOLOGIST. 



scarcely so broad as the width of the eyes ; mandibles 4-dentate, 

 the teeth subequal; clypeus angulate anteriorly. . Polybia, Lepeletier. 



(Type Polistes liliacea, Fab.) 



7. Body elongate, cylindrical, or fusiform, the abdominal petiole very 



long ; mandibles 3- or 4-dentate 8. 



Body rather short, not elongate, the abdominal petiole not especially 

 long ; mandibles bidentate. 



Body of abdomen rotund ; eyes small, the malar space dis- 

 tinct Gyrostoma, Kirby. 



(Type Cyclostoma orientalis, Kirby.) 

 Body of abdomen short-ovate ; eyes large, the malar space very 



small or linear Tatua Saussure. 



(Type Vespa morio, Fabr.) 



8. Body of abdomen fusiform, the second segment pedicellate 9. 



Body of abdomen elongate, cylindrical or nearly, the second segment 



not pedicellate and scarcely longer than the third . . Apoica, Lepeletier. 



(Type Polistes virginea, Fabr.) 



9. Second cubital cell trapezoidal, narrowed above ; mandibles 4-dentate. 



Clypeus short, angulate anteriorly ; maxillary palpi 5- 



jointed Belonogaster, Saussure. 



(Type Vespa grisea, Fabr.) 

 Clypeus anteriorly slightly emarginate and bidentate ; maxillary 

 palpi 6-jointed, the last joint the 



longest Mischocyttarus, Saussure. 



(Type Zethus labiatus, Fabr.) 



Second cubital cell triangular ; mandibles 3-dentate ; clypeus wider 



than long, subemarginate at apex; maxillary palpi 6-jointed, the first 



joint elongate, the last two small Paramischocyttarus, Magretti. 



(Type P. subtilis, Magretti.) 



ERRATA. 



In Mr. G. B. King's paper on the " Coccidse of British North 

 America," in the June number, the following corrections should be made : 



Page 159, for Ripersia bast read R. lasii. 



Page 160, for Pulvinaria brassicce read P. brassice. 



Page 160, Aspidiotus Dearnessi, Ontario (London), is from Lake 

 Huron, not London. 



