1(50 Mil. E. E. AUSTEN OS NEW BIFXEUOUS INSECTS. [JaU. 17, 



posterior tarsi ochraceous rufous ; the femora are gi'ooved below 

 towards the tips, and the middle oues bear a small angular process 

 on the postei'ior side of the groove at the tip : there is a similar 

 but smaller process on the front femora, which, however, is scarc(?ly 

 visible in the $ ; the middle as well as the posterior femora bear 

 small spines below ; in the case of the middle femora these are 

 chie% confined to a line extending backwards on each side of the 

 groove, but on the posterior pair they are scattered about on the 

 middle portion of the underside, as well as running along the 

 ridges bordering the groove. 



Face and chceJcs pale yellow in the J , somewhat deeper yellow 

 in the 5 , the facial tubercle small ; front yellow, the vertical 

 triangle in the J and the posterior portion as far as the ocelli in 

 the 2 black ; the anteuniferous process small, but prominent, a 

 shining black spot above the base of the anteinia*, and the median 

 portion of the anteuniferous process above black ; in the case of 

 the 5 , the front ^'ith a median black stripe extending forwards 

 from the ocelli rather more than two-thirds of the distance 

 between them and the base of the anteuniferous process, expanding 

 towards and forked at the tip : antcniw ochraceous, third joint 

 rounded at the tip ; arista dark brown, pale yellow at the base. 

 The cinereous pollinose stripe on each side of the median line of the 

 thorax is very conspicuous ; the stripes are only uarro\vly separated 

 in front aud fuse together posteriorly ; they almost reach the 

 scutellum ; outside these is a dark brown stripe on each side, and 

 then comes a pale greenish-bronze stripe, outside which, again, is 

 a very uarro\A- bro^n stripe ; this is joined behind the transverse 

 suture by the pleural stripe, which runs to and extends down 

 the middle coxa3 ; the stripes outside the cinereous pollinose ones are 

 divided by the transverse suture ; the cinereous pollinose stripes 

 are carried for\A"ard to the anterior margin of the thorax, with a 

 narrow dark bro^^■n border on each side ; the remaining stripes 

 ai'e abbreviated in front. Abdomen : the first segment \\ith a 

 conspicuous posterior border dark brown, not quite reaching to 

 the sides ; the remainder of the segment yellow ; second segment 

 yellow in the extreme basal angles, and also with an indistinctly 

 defined yellowish blotch on each side in the middle ; the posterior 

 border of the second segment may be narrowly brown ; in three 

 of the specimens in the collection there is an indication of a pale 

 yellowish mark on each side near the base of the third segment ; 

 the posterior margin on the underside of the foiu'th segment of 

 the J is raised and excavated, and bears two somewhat hammer- 

 sha])ed processes, and the anterior margin of the segment on the 

 underside is also excavated ; the sixth segment in the J , which 

 ends in the small spine, is globate; in two specimens in the 

 collection the abdomen is of a chestnut colour, and blackish towards 

 the tip, but this is probably due to drying. In the winr/s the sub- 

 costal cell is dark tawny, and the iufuscation of the fore-border 

 includes the distal third of the submarginal cell; the central 

 portion of the marginal cell is more ochreous, and the basal 



