100 Mr. F. Smitli on new Species 



margin of tlie ]irothorax transverse and elevated, tlie posterior 

 margin fringed with golden pubescence ; the mesothorax 

 smooth and shining, its lateral and posterior margins with 

 golden pubescence ; a band of golden pubescence crosses the 

 postscutellum from the insertion of the posterior wings ; the 

 sides of the metathorax, which is smooth and shining, with 

 ■pale golden pubescence ; the tibife and tarsi ferruginous, the 

 posterior pair more or less fuscous ; the tips of the femora and 

 the underside of the posterior pair ferruginous ; wings sub- 

 hyaline, with a fuscous cloud in the marginal cell. Abdomen : 

 the first and second segments above, the base of the third, and 

 the apical margins of the following segments narrowly pale 

 testaceous ; beneath, entirely testaceous, with a few irregular 

 fuscous stains, and covered thinly with a fine changeable golden 

 pubescence. 



Hab. St. Paulo. 



Trypoxi/lon superhim. 



Female. Length 6 lines. Head and thorax black, and 

 adorned with bright golden pubescence ; abdomen and legs 

 pale rufo-testaceous. Head : the face and clypeus covered 

 with bright golden pubescence ; the cheeks with a change- 

 able pale golden pile, which, in certain lights, has a silvery 

 brilliancy ; the palpi and mandibles testaceous yellow, the 

 latter rufo-piceous at their apex ; the scape, and four or 

 five of the following joints of the anteuufe, ferruginous. 

 Thorax : the prothorax and tegulffi pale feiTUginous, the 

 posterior margin of the former, the margins of the mesothorax, 

 the postscutellum, and the metathorax adorned with bright 

 golden pubescence ; at the base of the metathorax is a sub- 

 triangular space covered with very short pubescence, or golden 

 pile ; the sides of the thorax and also beneath clothed with 

 changeable fine golden pile, which, on the pectus, has a silvery 

 lustre ; wings flavo-hyaline and iridescent, the nervures fer- 

 ruginous. Abdomen : the apical margins of the segments 

 usually more or less blaclc, sometimes rufo-piceous, and in some 

 examples only faintly coloured with darker ferruginous. 



HaJy. Ega. 



Trypoxylon rugifrons. 

 Female. Length 6| lines. Head and thorax black, and 

 adorned with golden pile 5 the abdomen and legs pale ferru- 

 ginous. Head : an ovate space on the face, below the anterior 

 stemma, rugose ; the head otherwise covered with pale golden 

 pile, that on the cheeks and clypeus having a silvery brightness 

 in certain lights ; the scape and two basal joints of the fla- 



