'27S Mr. P. Cameron 07i 



Dimcetha tibialis, sp. u. 



Lutea ; auteuuis, abdominis apice late apiccque tibiarum posticarum 



nigris ; alis flavo-hj alinis, apice violaeco-i'uinato. $ . 

 Long. 20 mm. 



Antennae black, the scape yellow except above. Head 

 luteous, the face and eye-orbits of a paler yellow tint, smooth 

 and shining, the face and clypeus with some scattered punc- 

 tures. Mandibles luteous, the base broadly pale yellow. 

 Mesonotuni closely and minutely punctured, the middle slightly 

 raised. Scutellum strongly and deeply punctured, the sides 

 stoutly keeled to shortly beyond the middle ; the apex with a 

 gradually rounded slope. Postscutellum smooth and shining, 

 tlie space at its sides stoutly longitudinally striated. The 

 base of the median segment closely ])unctured and obliquely 

 depressed ; in the middle at the top of the depression is a 

 smooth and shining space, from which run a smooth and 

 shining keel along the sides and two diverging ones down 

 the centre, which is irregularly transversely reticulated ; the 

 sides are transversely striated. The upper part of the pro- 

 pleurae is coarsely aciculated, the middle bears stout perpen- 

 dicular keels, the apex stout longitudinal keels ; the lower 

 part is aciculated. Mesopleurai obscurely punctured above, 

 the lower part closely rugose, running into striae behind. 

 Metapleurae closely rugosely punctured. Legs coloured like 

 the body, with the apical third of the hinder tibiae and the 

 hinder tarsi (except the base of the hinder tarsi, which is 

 obscure luteous) black. AVings yellowish hyaline, the apex 

 Irom the apex of the areolet dark violaceous ; the stigma and 

 nervures are yellow. Abdomen coloured like the thorax, 

 except the apical three segments, which are black, and a 

 black transverse line on the base of the second and third 

 segments, the black on the second segment being produced 

 backwards between the gastrocoeli. The basal three segments 

 are closely punctured ; the apex of the petiole and the base 

 of the second and third segments striated. Gastrocoeli smooth, 

 bordered with stout strife behind. 



Facydes, gen. nov. 



Areolet five-angled, the nervures distinctly separated above ; 

 the apex of the wings with a fuscous cloud ; the transverse 

 median nervure distinctly received in front of the basal. 

 Antennse short, flattened, and compressed beyond the middle. 

 Clypeus with a shallow curved incision on the apex ; the 

 labrum not projecting. Scutellum pyramidal, distinctly raised 



