HYMENOPTERA. 339 



'i 



/. Larra apicalis. 



Stizus apicalis, Giier. Icon. Reff. Anim. iii. 437 ? • 



Male. Length 9 lines. — Ferruginous : the scape in front, the 

 apical joint of the flagellum, the labrum, ch'peus, the face above 

 as high as the insertion of the antennae, the sides, and two spots 

 before the posterior stemmata, yellow ; the mesothorax fuscous ; 

 the post-scutelluni and a curved line on the metathorax yellow ; 

 the wings and abdomen as in the other sex. 



Hab. Senegal. (Coll. F. Smith.) 



8. Larra argentifrons. B.M, 



Male. Length 4} lines. — Black : the palpi, labrum, clypeus, 

 and antennpe beneath, yellow ; the face densely covered with sil- 

 very pubescence ; the apical joint of the antennae terminating in 

 a sharp hook or spine ; the eleventh joint has also a bent spine 

 at the apex within ; the fourth joint has also a short tooth be- 

 neath. Thorax : the tubercles, tegular and an epaulet over them, 

 a stripe at the sides of the scutellum, a transverse line on the 

 post-scutellum and the legs, yellow' ; the coxse, except their tips, 

 the trochanters, and the femora more or less at then- base, black j 

 the wings hyaline and iridescent, the nervures testaceous. Ab- 

 domen : the apical margins of the segments with a bisinuated 

 yellow band ; beneath, the second and three following segments 

 have on each side an angular yellow macula. 



Hab. Port Natal. 



This species very closely resembles Larra tridens of Fabricius, 

 of which, indeed, it may possibly be an extreme variety. 



9. Larra atrox. B.M. 



Female. Length 11 lines. — Black : the labrum, clypeus, and 

 a spot above, the sides of the face and outer orbit of the eyes, 

 yellow ; the flagellum ferruginous ; the posterior margin of the 

 prothorax, an epaulet over the tegulfc, and the posterior margin 

 of the latter, ferruginous ; the anterior and intermediate tibiae 

 and tarsi ferruginous ; the tips of the femora and the apex of the 

 tibiae within, ferruginous ; the wings dark fuscous, with a violet 

 iridescence. Abdomen shining and very delicately punctured ; 

 at the extreme apex a little fulvous pubescence. 



Hab. South Africa. 



10. Larra basalis. 



Stizus basalis, Guer. Icon. Rtgn. Anim. iii. 438. 

 Hab. Senegal. 



