238 MB. p. OAMBROK ON [Mar. 19, 



is more prominent, and is obliquely sloped on the sides and apex ; 

 the part between it and the wings is black. Metanotura black, 

 thickly covered with pale down and more sparsely with longish 

 fuscous hair ; the striation is as usual ; in the middle are two 

 large, somewhat oval fulvous marks, which, on the outer side 

 of their apex, are prolonged to near the end of the segment. 

 The mesosternum and the basal half of the mesopleurse are 

 black ; the black on the latter is roundly incised on the apex 

 above. Metapleurse black, except on the apical third. Legs 

 coloured like the antennse ; the tarsi have a yellowish, paler tint ; 

 the claws have one stout tooth at the base. Wings yellowish 

 hyaline with a violaceous tinge ; the space bounded by the tips of 

 the 1st and 2nd transverse cubital nervures is almost equal in 

 length to that bounded by the 2nd and 3rd ; the apices of both 

 wings are very narrowly bounded by a fuscous cloud. Abdomen 

 entirely black ; the ventral surface sparsely, the hypopygium and 

 epipygium more thickly covered with long black hairs. 



The 3rd transverse cubital nervure is roundly and broadly 

 curved ; the 2nd transverse cubital nervure is received at the apex 

 of the basal third of the cellule ; the 2nd recurrent nervure has 

 the lower part straight and obliquely bent backwards ; the 2nd 

 submedian nervure in the fore wings is received distinctly behind 

 the middle of the discoidal cellule; the 1st recurrent nervure is 

 not quite interstitial, as it is in some of the species of the Mygnimia 

 section, it being received shortly, but distinctly, behind the trans- 

 verse cubital; the apical tooth of the mandibles is blunter, broader, 

 and more rounded than in most of the species, than in, e. g., S. cey- 

 ZoHicws and S.Jlavtis ; and the apex of the clypeus is more rounded, 

 not so broadly transverse in the middle, than it is in the two species 

 just mentioned ; the sides of the pronotum do not bulge out 

 roundly as in S. fiavus ; the metanotal tubercles are large and 

 prominent, on the base they have a longer and more oblique 

 slope than on the apex, where the slope is much more abrupt ; 

 the furrow on the mesopleurae is straight and oblique and ends 

 behind in a distinct fovea. 



S ALIUS BASIMACULA, sp. nOV. 



Fiavus; abdomine nigro, petiolo late fiavo balteato, femorihus 

 postids supra late nigro -lineatis ; alls fiavo-hyalinis. S • 



Long. 17 mm. 



Antennae pale yellow ; the third joint is shortly but distinctly 

 longer than the fourth, which is not quite so long as the vertex 

 between the eyes. The ocelli are in a triangle, the hinder are 

 separated from each other by half the distance they are from the 

 eyes, which converge only very slightly on the lower side. The 

 vertex across the ocellar region is black, the black line enclosing 

 all the ocelli. The whole head is covered with depressed golden 

 pubescence, and more sparsely with long pale hairs ; the apex of 

 the clypeus is transverse, with the sides broadly rounded ; the 

 apical tooth of the mandibles is triangular, the subapical is short 



