Manchester Memoirs, Vol. xliii. (1899), No. o. 59 



the apex of the hinder trochanters, the extreme base of 

 the hinder femora, their apical fourth deeply, and the 

 apical third of the tibiae, black, the black on the latter not 

 so deep at the base; the tarsi pale. Abdomen black, 

 shining ; the petiole whitish-yellow. 



Gasteruption MANDIBULARE, Sp. nov. 



Nigrum ; jnandibulis rufis ; macula ad basin tibiarum 

 posticarum rufo-testacea ; alis hyalinis. ? . 



Long. 12-13 ; terebra 13 mm. 



Antennae as long as the head and thorax united, 

 smooth, bare ; the third joint shorter than the fourth, 

 being about two-thirds of its length. Head opaque, the 

 front and vertex alutaceous, almost glabrous ; the hinder 

 ocelli separated from each other by about the same 

 distance which separates them from the eyes ; the occiput 

 with a narrow, sharp, distinctly separated border, which is 

 pale on the outer edge ; the face thickly covered with 

 white pubescence ; the mandibles rufous, the teeth black ; 

 the palpi blackish. Pronotum closely transversely striated, 

 deeply furrowed down the middle. Mesonotum opaque, 

 shagreened, bearing scattered, shallow punctures ; the 

 apex in the middle irregularly striated and punc- 

 tured. Scutellum finely rugose ; the sides above with 

 a curved crenulated furrow ; the sides below at the 

 apex strongly longitudinally striated. Median segment 

 under the petiole transversely striated, the striations at 

 the base bent down in the middle ; the apical ones some- 

 what stronger and more irregular. Propleurae strongly 

 shagreened ; an oblique shallow furrow in the middle, 

 which is striated behind ; the mesopleurae thickly covered 

 with silvery pubescence ; behind obliquely depressed, 

 irregularly striated. Metapleurae closely reticulated. 

 Legs black; the extreme base and apex of the front 



