THE CANADIAN ENTOMOLOGIST. • 221 



(or slightly longer than it), tapering distad. Wings normally 

 ciliate, the marginal fringes short. Abdomen as long as the thorax, 

 the ovipositor and its valves exserted, curved upward, fully as long 

 as the rest of the body. Abdomen sessile but narrowed at base, 

 triangular from lateral aspect. Propodeum slightly shorter than 

 the scutellum or the prothorax and simple, without carina?. Parap- 

 sidal furrows complete. Eyes ovate, the ocelli in a triangle in the 

 centre of the vertex, the lateral ones distant from the eye margins. 

 Propodeal spiracle elliptical. Face subquadrate, wide. 



Male. — Not known. 



A genus related to Xanthosoma Ashmead, from which it differs 

 in bearing the much longer marginal and postmarginal veins and 

 non-moniliform funicle joints. 



Type. — The following species: 



1. Xanthosomoides macidatipennis, new species. 



Female. — Length, variable, 2.50 mm. exclusive of ovipositor, 

 the exserted portion of the latter about the same length. 



Pale cadmium yellow, the head, pronotum, legs and a trans- 

 versa spot laterad of the mesopostscutellum (the spot cephalad of 

 the propodeal spiracle) contrasting yellow, lighter, lemon yellow; 

 also more or less, the produced part of the ventral abdomen. Lateral 

 suture of scutellum, the visible (dorsal, lateral) portions of the 

 occiput and the cephalic margin of the propodeum, black. Dorsal 

 aspect of abdomen suffused irregularly with brown. Venation 

 black. Fore wings hyaline, but with a conspicuous, rather large, 

 black globe-like stigmal spot, regularly oval in shape, obscuring the 

 curved stigmal vein and appearing as if suspended by a short 

 pedicel from the end of the marginal vein. Ciliation normal and 

 dense, the marginal fringes very short. Antennai yellow suffused 

 with much black. Ovipositor brown, the valves black. Thorax 

 delicately, transversely wrinkled. Club solid, first funicle joint 

 widening distad, nearly twice longer than broad at apex. Scape 

 yellow, black above. 



(From three specimens, the same magnification.) 



Male. — Not known. 



Described from three females on cards from the collections of 

 the Queensland Museum, labelled "Bred out of Gall 5 a. Brisbane. 

 H. Hacker." 



