HYMENOPTERA. 



287 



43. Larrada coronalis. B.M. 

 Female. Length 6-7^ lines.— Black : the face shining ; the 



clyi)eus covered with thin silvery pile ; a smooth shining carina 

 at the inner orbit of the eyes extending from opposite the inser- 

 tion of the antenna to the anterior stemma ; the vertex densely 

 covered with golden pubescence, a rounded spot of the same on 

 the mesothorax; the metathorax elongate, smooth and opake 

 above, the apex truncate, the sides and upper margin transversely 

 strigose, with a longitudinal channel deeply impressed ; the angles 

 of the truncation with a macula of bright silvery pubescence ; 

 wings subhyaline, with a transverse fuscous cloud towards their 

 apex ; the nervures black ; the marginal cell truncate at the 

 apex; the legs have a fine cinereous pile, at the apex of the 

 posterior tibiae it is golden. Abdomen covered with a changeable 

 pile, which has shades of purple, silver, or violet in different 

 lights ; on the lateral apical margins of the three basal segments 

 a large patch of bright silvery pubescence ; the segments also have 

 lateral spots of silvery pile beneath; the apical segment very 

 smooth and shining above, with a longitudinal carina on each side. 



Hub. Brazil (the Amazons; Villa Nova). (Coll. H. W. Bates.) 



44. Larrada decorata. B.M. 



Female. Length 7 lines. — Black : covered' with a fine change- 

 able silky pile, which in different lights is bright and silvery in 

 parts ; it is very brilliant on the apical margins of the segments 

 of the abdomen, the truncation of the metathorax, and on the 

 pectus, coxae and femora beneath ; the face and head behind the 

 eyes covered with bright pale golden pubescence ; the mesothorax 

 has a deep depression in front, which is covered with golden 

 pubescence, as are also the lateral and posterior margins ; the 

 metathorax has also a similar pubescence; the wings yellow, 

 their apical margins with a broad fuscous cloud, the nervures 

 pale ferruginous. 



Hab. Brazil (Para). (Coll. H. W. Bates.) 



45. Larrada antica. 



Male. Length 4^ lines. — Black : the face covered with golden 

 pubescence; the scape in front and the tips of the mandibles 

 ferruginous. Thorax : the metathorax densely covered with 

 golden pubescence ; the wings subhyaline, a dark fuscous stripe 

 runs from the base to the apex of the anterior pair ; the posterior 

 pair are faintly clouded at their apex ; the tips of the femora, the 

 tibiae and tarsi rufo-testaceous. Abdomen : the aj)ical margins 



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