HYMENOPTERA. 343 



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

 fourth and fifth segments have an interrupted\ellow fascia; the 

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

 lowmg segments have their apical margins vellow. The head 

 and thorax have a thin cinereous pubescence ; the abdomen has 

 a short yellow })ubescence. 



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



25. Larra flavipes. 



Female. Length 4^ lines.— Black : the antennre in front, the 

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

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

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

 each side of the scutelluin, 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 hyahne, 

 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 

 bismuated fascia on their apical margins; the sixth segment fer- 

 ruginous at its apex. 



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



26. Larra dubia. 



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

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

 antenna? beneath, yellow; the clvpeus covered with silvery 

 pubescence Thorax : the posterior margin of the prothorax, 

 the tubercles, a spot beneath the wings, the teguLx 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 tibia? 

 behind ; the tarsi have a dark stain behind ; the i)osterior legs 

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

 knees, and a stripe on the tibia at their ajjex beneath, yeflow ; 

 the coxa? and trochantei-s black ; wings subh valine, 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). 



