HYMENOPTERA PARASITICA 355 



Tribe V. CAMPOPLEGINI. 



Idechthis Forster. 



1868. Idechthis Forster, Verh. d. naturh. Ver. Rheinl., xxv. p. 154. 

 This genus is represented by a single species. 



( I ) Idechthis oahnensis, sp. nov. 



?. Length 7 to 7*5 mm. Head and thorax black, very closely punctate and 

 clothed with a sparse, glittering white pubescence, that on the face denser and silvery ; 

 mandibles rufous ; palpi, tegulae and front and middle coxae and trochanters, yellowish- 

 white ; rest of legs rufous or ferruginous, the hind tibiae and tarsi often more or less 

 obfuscated or fuscous ; abdomen mostly rufous or ferruginous from the apex of the 

 second or third segment, but these segments are more or less dusky above ; ovipositor 

 a little longer than the hind tarsi. Wings hyaline, the stigma and veins brown, the 

 areolet petiolate, the transverse median vein interstitial, the third discoidal cell about 

 twice as wide at apex as at base. Antennae, with the annulus, 2,2> to 34-jointed. 



Hab. Oahu : Waianae Mts., in March. — Hawaii : Hilo (H. W. Henshaw), in 

 July. 



Lathrostizus Forster. 

 1868. Lathrostizus Forster, Verh. d. naturh. Ver. Rheinl., xxv. p. 154. 



( I ) LathrostizJis iiisiciaris, sp. nov. 



$. Length 6 mm. Head and thorax closely punctate, black and clothed with a 

 sparse, whitish pubescence ; first two joints of antennae, except on disk above, and the 

 front and middle legs, except the coxae and trochanters, honey-yellow ; mandibles, palpi, 

 front and middle coxae and trochanters, the apex of hind co.xae and sutures of 

 trochanters, and all tibial spurs, yellowish-white ; hind coxae, except at apex, black ; 

 rest of legs dark reddish ; abdomen black, the apices of the third and following segments 

 narrowly testaceous, at the sides more or less obscure, rufous ; the ovipositor is about 

 as long as the hind tarsi and has a slight upward curve. 



The antennae are 30-jointed and extend to the base of the abdomen, the fiagellum 

 being brown-black, clothed with a very short sparse pubescence. The wings are 

 hyaline, the tegulae and the subcostal vein yellowish-white, the costal vein and the 

 outer edge of the stigma brown-black, the stigma within and the internal veins being 



