HYMENOPTERA. 343 



third segment has on each side an arcuate yellow strijie ; the 

 fourth and fifth segments have an interrupted yellow fascia; the 

 sixth an entire yellow fascia ; beneath, the third and three fol- 

 lowing segments have their apical mai'gins yellow. The head 

 and thorax have a thin cinereous pubescence ; the abdomen has 

 a short yellow pubescence. 



Hab. The Gambia. (Coll. F. Smith.) 



25. Larra flavipes. 



Female. Length 4i lines. — Black : the antennae in front, the 

 clypeus, labrum and manchbles, yellow. Thorax : the anterior 

 and posterior margins of the prothorax, the tubercles, a spot be- 

 neath the wings, the tegulse and an epaulet over them, a spot on 

 each side of the scutellum, the post-scutellum, the lateral poste- 

 rior angles of the metathorax, and the legs, yellow ; the meta- 

 thorax truncated and hollowed out behind ; the wings hyaline, 

 their nervures ferruginous. Abdomen : the basal segment has 

 on each side a large angular yellow spot, the two uniting in the 

 middle of the segment ; the four following segments have a 

 bisinuated fascia on theii' apical margins ; the sixth segment fer- 

 ruginous at its apex. 



Hab. The Gambia. (Coll. F. Smith.) 



26. Larra dubia, 



Male. Length 4 lines. — Black : the clypeus and an angular 

 spot above, the labrum, palpi, a spot on the mandibles and the 

 antennae beneath, yellow; the clypeus covered with silvery 

 pubescence. Thorax : the posterior margin of the prothorax, 

 the tubercles, a spot beneath the wings, the tegula; and an 

 epaulet over them, a spot on each side of the scutellum, the 

 post-scutellum, and the lateral margins of the metathorax, 

 yellow ; the angles of the latter acute ; the anterior and interme- 

 diate legs yellow, with a black stripe on the femora and tibiae 

 behind ; the tarsi have a dark stain behind ; the posterior legs 

 black, a yellow stripe on the femora above at their base ; ttie 

 knees, and a stripe on the tibias at their apex beneath, yellow ; 

 the coxcc and trochanters black ; wings subhyaline, the second 

 submarginal cell petiolated. Abdomen : the basal segment with 

 a broad yellow band on its apical margin sinuated in the middle; 

 the other segments have a bisinuated fascia, the two apical seg- 

 ments yellow ; beneath, the second and following segments with 

 a narrow yellow fascia on their a])ical margins ; the abdomen is 

 thinly covered with short pale pubescence. 



Hab. Brazil (Villa Nova). 



