Platychirus. 201 



downwards; the central knob shining. The lower part of epistoma 



and the knob somewhat produced, the mouth edge and knob about 



eqiially protruding. Occiput greyish yellow pruinose, with yellow hairs, 



above some long, black hairs but the hairs behind vertex yellow. 



Antennæ not large, third joint yellowish below at base to a higher 



or smaller degree. Thorax greenish æneous, sometimes more brassy, 



shining; it is clothed with erect, yellow hairs, long behind and on 



scutellum ; on each side of the disc more or fewer black hairs may 



be intermingled, tending to form two longitudinal bands; also in the 



middle on the posterior part may be black hairs. Pleura yellow-haired. 



Abdomen dull black, shining at the apex, with three pairs of quadrate 



or subquadrate, yellow spots, the first pair smallest, the 



second largest; the second and third pairs lying quite near 



the front margin; the fifth segment with a pair of small, 



more or less indistinct spots. Abdomen is clothed with 



yellow hairs, long at the sides and towards the base; on ^ ^ 



the black parts arc mainly black hairs. Venter translucent 



or more or less æneous, especially towards the end, 



shining and with long, pale hairs, short on fourth segment. 



Legs with the femora blackish, anterior femora yellowish 



in about the apical half, but below the black coloLir 



stretching about to the apex; anterior tibiæ and tarsi 



mainly pale, middle metatarsi more or less darkened ; hind 



legs almost quite black only the knees narrowly reddish. 



Front trochanters with a brush of short spines below, 



middle trochanters with a small, inconspicuous brush; 



front femora with dense and strong, black bristles on the 



posterior and postero-ventral side; front tibiæ suddenly 



somewhat dilated at the end, on the lower side the basal 



part, two oblique transverse bands and the apex are 



brown, the upper band widening to a spol on the posterior 



side; this side bears a short fringe, black above, yellow Fig. lOJ. 



below; the metatarsus dilated, somewhat rectangular with P.peltahis d, 



the anterior end corner produced and about as long as iight front leg 



fil 

 the four following joints; it is whitish with some blackish "^ oeiow. 



X 20 

 markings below, especially two larger spots on the anterior 



lateral half; the spots have short, black hairs; the anterior side margin 

 is black ; the second tarsal joint is a little dilated, whitish, the three 

 last yellow; middle coxæ with a small, triangular, dent-like prolonga- 

 tion at apex on the front side; the middle femora have a large exci- 

 sion after the middle on the anterior side, below there are short, 

 black bristles, specially short on the edge of the excision, and just 



