HYMENOPTERA. ^7 



interrupted on their vertex, a large transverse macula above the 

 insertion of the antennie, the scape above and the anterior mar- 

 gin of the clypeus, yellow ; the mandibles, and the anterior mar- 

 gin of the clypeus narrowly, rufo-piceous. The prothorax has a 

 large spot on each side anteriorly, and a smaller spot on each 

 side of its posterior margin, a quadrate spot on the disk of the 

 mesothorax, a stripe on each side over the tegulae, a spot on the 

 scutellura, and the sides of the metathorax behind, yellow ; the 

 cox8e have a yellow spot beneath, the femora are yellow-testa- 

 ceous beneath, and more or less so at their apex above ; the 

 tibiee and tarsi are pale rufo-testaceous, yellowish beneath, and 

 densely covered with pale testaceous spines ; wings hyaline, the 

 anterior pair having a dark fuscous stripe on their superior mar- 

 gins. Abdomen shining and iridescent, the first segment having 

 a broad yellow fascia, much attenuated in the middle ; the second 

 an oblong spot on each side at its base, the third a continuous 

 fascia at its basal margin, the fourth and fifth a fascia in the 

 middle, the latter subinterrupted, yellow ; beneath, the three 

 basal segments have an angular spot on each side. 



Male. Length 5-6 lines. — Black ; a narrow line along the 

 inner orbits of the eves, the scape in front, a transverse line above, 

 the clypeus, the labrum and mandibles, yellow, the tips of the 

 latter black ; a line on the posterior margin of the prothorax, an 

 interrupted one on the collar, a quadrate spot on the mesothorax, 

 the tegulae, scutellum, and post-scutellum, a large ovate spot on 

 each side of the metathorax,a spot beneath the wings, a dot behind, 

 and the legs, yellow ; the coxae and base of the femora black, the 

 former spotted with yellow; wings hyaline. The abdomen has 

 a continuous band on the apical margins of all the segments yel- 

 low, that on the basal segment produced forwards on each side. 



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



37. Myzine nitida. — - "' B.M. 



Male. Length 5-5i lines. — Black, head closely punctured ; a 

 line above the insertion of each antenna, another along the lower 

 portion of the inner orbits of the eyes, the clypeus, labrum and 

 mandibles, yellow, the latter ferruginous at their tips. Thorax 

 strongly punctured, very closely on the metathorax, which is 

 transversely rugose behind, and has also sometimes a yellow line 

 on each side ; the prothorax has an interrupted line on the 

 collar, a continuous one on its posterior margin, a spot on the 

 tegulse, another on the disk of the mesothorax, a transverse one on 

 the scutellum and post-scutellum, a stripe beneath the wings and 

 a dot behind, yellow ; the intermediate coxse have a yellow spot 

 at their base beneath, and the posterior pair a line behind ; the 



