184 HYMENOPTEEA. 



are some transverse striations. The face projects in the centre ; the projecting part is 

 interrupted beyond the middle by a broad transverse hollow and ends at the base of the 

 clypeus, which projects outwardly at the apex, thus forming a hollow. The foveae at 

 the sides of the clypeus are large and deep. Labrum projecting, semicircular at the 

 apex, and covered there with longish hair. The entire head (except the hollow space 

 above the antennae) covered with distinct punctures. Thorax closely punctured. The 

 pronotum is black, except round the edges, which are broadly yellow ; on the meso- 

 notum there are two yellow longitudinal lines in the centre, running from the pronotum 

 to a little past the yellow tegulae ; the carinae running to the scutellum are clear yellow 

 at the base. The scutellum is yellow on its apical half and behind; the junction 

 between the meso- and metanotum and the postscutellum are also yellow. Below the 

 wings there is a broad black line, and the hollow in the centre of the mesopleura and 

 the sutures are also black. On the metanotum is a broad black mark (narrowest 

 behind) reaching from the base to the tubercles. The scutellum rises obliquely* 

 narrowing gradually to the apex, which is slightly depressed in the centre. The 

 scutellum itself is not keeled, but the keels at its base are broad. The keels on the 

 median areae are not very distinct, but that bordering the outside of the spiracular is. 

 The supramedian area is not very clear ; it is rounded at the base and transverse at the 

 apex ; at its base the metanotum is raised above its level. The lateral tubercles are 

 large (and triangular in form if viewed from the side), their apices not very acute. The 

 pleurae in the middle are longitudinally, the metanotum behind transversely, striated. 

 The petiole is smooth, shining, and impunctate at the base, shallowly punctured at 

 the apex ; the postpetiole is broad, slightly depressed at the sides, and punctured ; 

 the petiole, to near the apex, is black. Gastrocoeli large, broader than long, coarsely 

 striated. The abdomen is closely punctured and acute at the apex ; the black mark on 

 the second segment occupies somewhat more than the basal half, and is transverse at 

 the apex ; on the three following segments it occupies scarcely the half, and is rounded, 

 narrowing at the sides ; on the fifth segment it does not occupy more than one third ; 

 there is no black on the apical segment, but the sheath of the ovipositor is black. 

 There is a small black spot at the base of the hind coxae and a larger one at the apex r 

 both being on the upper side ; on the underside and at the apex the hind tibiae are 

 brownish ; the lower side of the tarsi inclines also to brownish. Areolet triangular 

 above, the lateral nervures almost touching. 



In one specimen, apparently a variety of the above, the upper part of the scutellum 

 is roundly depressed, thus forming two tubercles, and the black on the mesopleura is 

 longer and has a yellow spot in the centre. 



147. Ichneumon marguiiscutellatus. 



Niger, flavo-varius ; ore, facie, orbitis, annulo flagello antennarum, linea pronoti, maculis 2 mesonoti, scutelli 

 medio, postscutello, maculis 4 pleuralibus, maculis 2 metanoti abdominisque segmentis apice, flavis; pedibus 



