106 [August 



ish spot ou each side at base, as well as a line on the postseutellum ; 

 metathoras densely and strongly punctured, with a large subpyi'iform 

 yellow mark on each side, the punctures on the enclosed basal space 

 running into slightly oblique striae, with a finely impressed line down 

 the middle, continued to the tip of the metathorax ; teguhie honey- 

 yellow. Wings fuliginous, much darker on the anterior margin, with 

 a deep violaceous reflection ; nervures fuscous ; costal nervure honey 

 yellow. Legs entirely honey-yellow. Abdomen opaque, very densely 

 and finely punctured ; first segment small, black, with a broad apical 

 yellow band, deeply emarginated on the middle anteriorly ; second seg- 

 ment yellow, with the b;isal margin irregvilarly brownish, and a trans- 

 verse l'erru<;inous dask on the middle ; the three followins' seiiinents 

 each with a narrow, continuous, subapical, yellow band; the extreme 

 apical margins of all the segments shining brown ; a stain on each side 

 of the third segment, and the apical segment almost entirely, reddish- 

 brown ; apical segment obtusely rounded at tip ; venter piceous, shin- 

 ing, sparsely punctured, the second segment fulvous. Length 7 J lines; 

 expanse of wings 12 Hues. 



Male. — Dift'ers from the female as follows : — the face beneath the 

 antennae is entirely yellow, this color extending upwards on the ante- 

 rior orbit for a short distance above the insertion of the antennae ; be- 

 tween the antennaj there is a longitudinal yellow line almost reaching 

 the anterior ocellus ; the mandibles are honey-yellow, black at tips ; 

 the cheeks and occiput are black, excepting a fulvous dot behind the 

 eyes ; the collar has a narrow interrupted yellow line, the postseutellum 

 a yellow line ; the scutellum is always black, generally immaculate, one 

 specimen only having a yellow dot on each basal corner ; the metatho- 

 rax has only a small yellow s^jot or dot on each side at extreme tip. 

 sometimes subobsolete; the tegul^e has a yellow spot in front; the 

 wings are clearer, being subhyaline, with the broad anterior margin 

 commencing at the base of the first submarginal cell of the wing, yel- 

 lowish-fuscous, darker at tip and in the second submarginal cell ; the 

 legs are paler, with the tibice and tarsi more or less yellowish ; the 

 coxae, trochanters and femora within and at base, are sometimes black- 

 ish ; the abdomen is black, with the yellow markings much as in the $ . 

 except that the apical half only of the second segment is yellow, with 

 a transverse black line across the middle, more or less confluent in the 

 middle with the black at the base of the segment ; the sixth se2;ment 

 with an interrupted, subobsolete yellowish wavy band at tip, sometimes 

 wantinu. and occasionally the band on the fifth seg-trent is abbreviated 



