376 



opaque, finely rugosely punctured. Mesonotum smooth, shining, 

 the farrows sti'iated, the striae uniting at the central apical 

 dépression, which lias the apex ronnded and does not extend to the 

 scutellum; the central lobe has a smooth furrow down the centre. 

 Scutellnm smooth, shining, triangular, bordered by crennlated 

 furrows. Metanotum in the middle finely rugosely punctured, the 

 sides aciculate 1. Propleurre finely aeiculated-punetured atthe base, 

 the middle finely closely . reticulated, the apex rather strongly 

 striated. Metapleurse almost smooth at the base above, the rest 

 striated, almost reticulated, opaque. Basai 2 segments of the abdo- 

 men opaque, finely, closely striated, almost reticulated, the basai 

 segment more strongly thau the 2 nd ; the others smooth, shining. 



Stirostoma gen. nov. — Wings with 3 cubital cellules, the 

 radius issuing from behind the middle of stigma ; nervellus inters- 

 titial, récurrent nervure received clearly in l st cubital cellule, the 

 anal nervure issuing from near bottom, not interstitial. Head not 

 quite cubital, the vertex and cheeks immargined. Eyes large, 

 reaching close to the mandibles, the malar space small. Apex of 

 clypeus transverse, its sides bounded by furrows which converge 

 above. Parapsidal and pleural furrows obsolète. Abdomen long, 

 narrow, the l st segment fùlly 3 times longer than wide, slightly 

 longer than the 2 n ' ] , which has no area, but has the basai two-thirds 

 irregularly striated; there is a narrow keel down its centre and the 

 sides are smootherand depressed; there is a nai'row keel down the 

 middle of the 3 rd segment. Legs long, densely haired, the hind 

 coxse long, fully 3 times longer than wide; the spurs short, the 

 claws small. 



If it were not that there is no semicircular opening at the oral 

 région I should hâve referred this genus to the Rhogadinœ with 

 which it agrées in the basai abdominal segments being keeled. 

 I am at présent unable to refer it to any group outside the 

 Cyclostonti. 



Stirostoma longiornis sp. n. — Rufo-testaceous, the head 

 paler, more yellowish in colour, the antenme, apex of Ihe 3' - ' 1 and 

 the whole of the following abdominal segments and the hind tibiae 

 and tarsi black ; wings yellowish hyaline, a cloud across the trans- 

 verse basai and transverse médian nervure extending from the 

 costa to the posterior border of the wing, wider on the outer than 

 on Ihe inner side of the transverse médian ; one of about the same 

 width extending from near the hase to near Ihe apex of the stigma, 

 then across to the hinder margin, where it is continued round 

 the apex of the wings, where, in the centre, it is wider than the 



