100 



appearance of being a true joint (if so a fourteentli joint) ; 

 pedicel somewhat longer tlian any of the following joints, three 

 of the funicle being subqnadrate. Mandibles tridentate. 

 Ovipositor very slender, curled. Postmarginal vein longer 

 than the stigmal, which is subequal to the marginal. Axillae 

 with an ovate black spot in the cephalo-lateral angle. Length, 

 1'60 mm., exclusive of ovipositor, which is twice longer then 

 the body. 



(S . Not known. 



Hab. — Queensland: Cairns (A. M. Lea). 



Type. — I. 1334, South Australian Museum. Four of nine 

 specimens on a card and a slide with the head. 



I designate the above species type of the genus. 



MONODONTOMERIN^ . 

 Mackodontomerus, new gen. 



9 . Like Plesiostigmodes , Ashmead, but the pronotum 

 normal, not by far as long as the mesonotum ; scutellum with- 

 out a cross furrow; abdomen produced ventrad at middle, 

 triangular from lateral aspect. Otherwise the same. 



S . Not known. 



Type. — The following species. 



Macrodontomerus triangularis, new sp. 



9 • Brilliant metallic seneous-green, the knees, tibiae, 

 and tarsi straw-yellow, the rest of the legs ooncolorous. Wings 

 hyaline, the stigmal vein very short, only half the length of 

 the short postmarginal. Cephalic femora short, swollen, the 

 posterior femora slightly enlarged and with a small tooth 

 beneath before apex (also a slight indication of a second one 

 farther proximad) and very minutely subserrulate. Antennae 

 with two ring- joints, the first funicle- joint longest, slightly 

 longer than wide, shorter than the pedicel ; antennae black. 

 Thorax finely transversely lined and scaly. Length, 2*40 mm., 

 exclusive of the ovipositor, which is somewhat shorter than 

 the body. 



Hah.—^ew South Wales: Mittagong (A. M. Lea). 



Type. — I. 1335, South Australian Museum. 



IDARNIN^. 



Idarnoides, new gen. 



9 • Like Idarnes, Walker, but the scutellum without 



grooves, the antennae 12-jointed with two ring-joints, the 



funicle-joints mostly subquadrate, but the first distinctly 



longer than wide. Mandibles bidentate. Marginal vein twice 



