346 HYMENOPTERA. 



nervures ferruginous. Abdomen : each segment has a large 

 bell-shaped macula in the centre, on each side of which is a large 

 oblong macula, giving the abdomen the appearance of a coat of 

 mail ; beneath, the apical margins of the segments fulvous. 



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



36. Larra melanoptera. 



Stizus melanopterus, Dahlb. Hym. Europ. i. 478. 

 Hab. Rhodes. 



37. Larra melanoxantha. 



Male. Length 6 lines. — Yellow : the flagellum fulvous ; the 

 vertex black ; the apical joints of the antennas fuscous above ; 

 the ti])s of the mandibles rufo-piceous. The mesothorax, the 

 post-scutelhun, and two oblique lines on the metathorax uniting 

 at its apex, black ; the wings hyaline, the marginal cell occupied 

 by a fuscous cloud. The extreme base of the abdomen black, 

 the black colouring produced in the middle into an angular spot 

 which extends down half the length of the segment ; the apical 

 margins of the first and three following segments black, and an 

 angular black spot in the middle of their base ; the apical seg- 

 ment ferruginous. 



Hab. India. (Coll. W. W. Saunders, Esq.) 



38. Larra mellea. 



Female. Length 5 lines. — Honey-yellow : the flagellum and 

 vertex pale ferruginous ; three longitudinal ferruginous stripes 

 on the mesothorax, and the margins of the scutellum and post- 

 scutellum ferruginous ; the legs in some individuals with ferru- 

 ginous stains ; the wings fulvo-hyaline, a fuscous cloud occupy- 

 ing the marginal cell, the nervures ferruginous ; the basal and 

 aj)ical margins of the segments of the abdomen narrowly ferru- 

 ginous. 



Hab. India. (Coll. W. W. Saunders, Esq.) 



39. Larra Mionii. 



Stizus Mionii, Guer. Icon. Reg. Anim. iii. 438. 

 Hab. Senegal. 



40. Larra moneduloides. B.M. 



Female. Length 3 lines. — Black: the mai-gins of the clypeus, 

 the labrum, palpi, and antennae beneath, pale yellow ; the fla- 



