154 On new Genera and Species of Ilymenoptera. 



but not to tlie base of the maiidihles, which are short and 

 have at the apex two stout, trian^uhir, equal teeth. Paia- 

 psidal furrows distinct, deep. Median segment hirge and with 

 a rounded "radual slope to the apex, the base finely aciculated, 

 shining; this space bears two curved keels which originate 

 at the base and are united in the middle by a short transverse 

 keel, thus forming a central area, which is narrowed towards 

 the apex ; the part behind this is strongly reticulated aiid 

 striated, the spines large, leaf-like, the spiracles small, oval. 

 Legs longish. Petiole long, narrow, not much thickened 

 towards the apex, curved ; the spiracles placed near the base 

 of the postpetiole. Ovipositor projecting. 



Has the small areolet of Mesostenns, trom which it may be 

 known by the small, oval, not linear or elongate sj)iracles, by 

 the longer and more slender antenna^, and by the longer, 

 narrower, and not distinctly dilated at the apex, petiole. In 

 the form of the petiole it does not differ much from Cerata- 

 cryptusy but that, apart from the tubercles on the front, may 

 be known from it by the elongate metathoracic spiracles. It 

 lias pretty much the form of Friona, but that genus has the 

 anteniue longer, the front distinctly depressed and strongly 

 sti'iated ; it has no enclosed area on the base of the mediau 

 segment and the spiracles are more elongated. 



Melcha vartpes, sp. n. 



Nigra, mandibulis, palpis, scutello 6])inisque metanoti flavis ; pedibus 

 rufis, apice femorum posticorum tarsisque posticis nigris ; alls 

 hyaliuis, stigmate nervisque nigi"is. $ . 



Long. 11-12 mm. ; terebra 3 mm. 



Ilab. Khasia Hills. Coll. Rothney. 



Antennae black ; the fifth to ninth joints clear white, 

 except above; the scape covered with short dark pubescence 

 and impunctate. Head entirely black, the mandibles and 

 palj)i yellow, the mandibular teeth black. Face coarsely 

 shagreened, the centre obscurely transversely striated ; the 

 front and vertex coarsely shagreened, the front with a stout 

 keel down its centi-e ; the part on either side of the keel is 

 irregularly transversely striated ; the front is broadly and 

 distinctly depressed. Thorax black ; the inner side of the 

 tegula', the seutellum, the scutellar keels, the postscutelliim, 

 and the metanotal spines, yellow. Mesonotum closely punc- 

 tured I the middle lobe is distinctly raised; the furrows are 

 wide and deep. In the centre of the median segment at the 

 base is a triangular area bordered by straight keels, the narrow 

 part being at the apex ; this area is strongly coarsely acicu- 

 lated, and is separated from the postscutellar region by a 

 smooth depression ; the part between the base of the segment 



