s({me new geneka and species of hymenoptera. 207 



This is considerably larger than any of the other species of 

 this section. 



MUTILLID^. 



MUTILLA CASIPHIA, Sp. nOV. 



Black ; the basal three segments of the abdomen red ; the scutellum 

 with a narrow deep furrow down the centre ; the area on the median 

 segment reaches to the apex of the truncation, and becomes gradually 

 narrowed ; wings violaceous, paler at the base. $ . Long. 18 mm. 



Hah. Borneo. 



Antennae short, the flagellum opaque ; the third joint slightly 

 longer than the fourth, which is of the length of the fifth. Head nar- 

 rower than the thorax, densely covered with long griseous hair ; on the 

 cheeks the hair is longer, denser, and bright silvery in tint. Front 

 and vertex coarsely rugosely punctured ; the face and clypeus smooth 

 and shining ; on the centre, above the clypeus, is a conical projection, 

 the narrow part being above ; the clypeus is depressed below it, and 

 foveate on either side of its apex. Mandibles broad ; the apical tooth 

 broad, broadly rounded at the apex, the subapical tooth transverse ; at 

 the base, behind the middle, is a large blunt tooth, which projects 

 downwards ; the base is thickly covered with grey pile, and with 

 silvery hair ; the palpi are black. Pro- and mesothorax closely and 

 strongly punctured ; the mesopleuraB and sternum thickly covered 

 with silvery pubescence ; the mesonotum thickly with longish blackish 

 hair ; the scutellum and post-scutellum with long black hair ; there 

 are two furrows on the apical two-thirds of the mesonotum, a smooth 

 fiat keel between them, and a shorter one on either side. Scutellum 

 roundly convex, rugosely punctured ; there is a furrow in the centre 

 of the apical two-thirds, bordered by flat smooth keels, and there is a 

 flat smooth keel at its base. Median segment coarsely and regularly 

 reticulated ; there is a central area which reaches to the top of the 

 truncation ; it is wide at the base, and becomes gradually narrowed to 

 the apex, which is not quite one-half the width of the base. Propleurfe 

 closely rugosely punctured, the apex smooth, with some stout striae 

 behind. Legs thickly covered with white hair ; the spurs pale. Wings 

 deep fusco-violaceous, paler at the base ; the pale space on the hinder 

 wings more extended than on the front ; the third cubital cellule at 

 the top and bottom is distinctly shorter than the second ; the apex of 

 the radius is obliquely bent upwards, is straight, and at a different 

 angle from the lower part ; the first transverse cubital nervure is 

 rounded, and has an oblique slope ; the second is not oblique, and has 

 a broad rounded curve ; the third is sharply angled in the middle ; 

 both the recurrent nervures are received shortly, but distinctly beyond 

 the middle. The apical half of the first and the whole of the second 

 and third segments are rufous ; the basal five segments are covered 

 with white, the apical more thickly with longer black hair ; the ventral 

 keel is stout, does not extend beyond the middle, and is roundly but 

 not deeply curved below. The pygidium has an elongated bare space, 

 narrowed at the top and bottom in the centre ; the sides on the basal 

 two- thirds are covered with long black hair ; the apex is sparsely but 

 not strongly punctured ; the hypopygium is flat, covered with long 

 black hair, and not keeled. 



