136 THE CANADIAIS ENTOMOLOGIST. 



Decatom phellos, n. sp. — ^. Length .10 inch. Head brown 

 black, finely punctate ; eyes greenish brown ; antennae 7-jointed, scape 

 and joints 3 and 4 dark, balance rufous, thorax dark brown, coarsely 

 punctate ; coUare broader than mesonotum, beneath reddish brown, parap- 

 sidal grooves almost obliterated ; scutellum convex, coarsely punctate ; abdo- 

 men smooth, black and shining, peduncle brownish, hardly the length of 

 abdomen ; wings hyaline, veins slightly yellowish ; stigma black, smoky 

 blotch beneath extending more than two-thirds across the wing ; legs honey 

 yellow, coxse dark, middle femora and tibiae slightly darker, posterior femora 

 and tibi^ brown black. 



Raised from gall on Qiiercus phellos. 



Decatoma FOLiATiE. — %. Length .10 inch. Head black, coarsely 

 punctate ; eyes brown ; antennse 9-jointed, brownish, sparsely pubescent ; 

 scape yellowish, last three joints somewhat connate ; thorax coarsely 

 punctate, coUare attenuated and a beautiful orange yellow ; some speci- 

 mens have only the corners so colored ; abdomen brownish black, smooth 

 and shining ; wings hyaline, veins almost hyaline, slightly yellowish, a large 

 black circular stigma with tip of stigmal vein protruding, iridescence 

 strongly defined on hinder wings, the whole outer margin sometimes being 

 a beautiful violaceous ; legs a beautiful bright orange yellow, with tarsi 

 and feet slightly paler and posterior coxse black. 



^. Length .08 inch ; 2nd joint antennre larger, scape black, corners 

 of collare orange yellow, peduncle two-thirds as long as abdomen, coxae 

 black, stigma spot somewhat triangular ; palpi and labrum yellowish white; 

 otherwise same as !^ . 



Described from numerous specimens raised from leafy live oak gall, 

 Cynips q. foliata Ashmead. 



Decatom A batatoides, n. sp. — Length .15 of an inch. This species 

 in punctation and shape very much resembles D. foliatce., but may be easily 

 distinguished by the following differences : In size ; eyes, face and antenna 

 brown, mouth parts and palpi yellowish, coxae and legs a uniform lemon 

 yellow, collare and mesothorax lemon yellow, sternum black, sutures of 

 parapsides yellowish, posterior margin of scutellum yellowish and stigma a 

 mere dot. 



Described from several specimens bred from the live oak potato gall, 

 Cynips q. batatoides Ashmead. 



