SO PERCY SLADEN TRUST EXPEDITION, 
closely and strongly at the base and below; the metapleuree much more strongly and 
closely punctured. The first abdominal segment is smooth and shining; the others 
closely and strongly punctured. Median segment thickly covered with white 
pubescence. Mandibles yellow at the base, narrowly red in the middle, black at the 
apex. ‘Larsi below thickly, stoutly spinose ; the spines dark red. 
What is no doubt the male has the body for the greater part yellowish, there is a long 
fuscous line in the centre of the mesonotum and a shorter one on the sides; there is 
a broad reddish line down the middle of the metanotum, the basal three segments of the 
abdomen are yellowish, slightly suffused with rufous, the apical darker rufous, more 
or less yellow on the sides and apex; the antenne are dark brownish red, darker at the 
apices of the joints, where they are slightly dilated. The legs are much more largely 
suffused with yellow, which predominates over the red. The black lines on the thorax 
in the female are in the male reddish. I should think that the males vary considerably 
in the amount of red and yellow which they bear. 
23. Echthromorpha rufa, sp. nov. 
Red, the face and clypeus paler, more yellowish; the flagellum of antennz from 
near the base infuscated; wings hyaline, the nervares and stigma black, the apical 
cloud faint. 29 & ¢. 
Length 13 mm.; terebra 4 mm. 
Localities. Seychelles, Mahé. 
Head smooth, the face and clypeus densely covered with white pubescence; the 
front depressed, furrowed down the centre. Mesonotum strongly, closely punctured. 
Seutellum roundly convex, keeled at the base. Metanotum closely, distinctly trans- 
versely striated, depressed laterally at the base; the metapleurze coarsely rugosely 
punctured, finely closely striated at the apex. Propleurze for the most part closely 
striated. Mesopleurze smooth, sparsely punctured on the upper, closely, somewhat 
strongly punctured on the lower half. | Metapleurze coarsely rugosely punctured, 
smooth at the base. First abdominal segment furrowed in the middle of basal half, 
the furrow smooth, the sides closely finely transversely striated; the apex smooth in 
the middle, the sides closely punctured ; it is nearly twice longer than it is wide at the 
apex. The second and following segments are closely, somewhat strongly punctured ; — 
the second segment is longer than wide, the others wider than long. 
The metanotum has a gradually rounded slope, the base closely rugose, the apex 
finely closely striated and depressed on either side of the middle. ‘The male is similarly 
coloured ; the flagellum of antennze is black, with the joints nodose; the hind tarsi 
are darker-coloured than they are in the female, being almost black. 
The coloration of this species is very different from what it is in the Oriental and 
African species of Echthromorpha; it has also the scutellum more convex; the first 
xubdominal segment is longer and narrower ; and the wings have the apical cloud 
much fainter than in the typical species. It possesses, however, the main generic 
characteristics of the genus. 
