448 MEMOIRS OF THE CARNEGIE MUSEUM 



Melanosmicra clavata (Fabricius). 



Chalcis clavata Fabricius, Syst. Piez., 1804, p. 162. — Dalla Torre, Cat. Hym., V., 

 1898, p. 387. 



Brazil. 



Melanosmicra immaculata, sp. nov. 



Male. — Length 5 mm. Head and thorax entirely black ; scape of antennae, the 

 front and middle legs, the hind tarsi, and the long abdominal petiole, yellow ; body 

 of abdomen red ; flagellum filiform, brown-black ; while the hind legs, except the 

 tarsi, are pale ferruginous. 



Brazil : Chapada, in December. 



Genus THAUMAPUS Kirby. 

 Thaumapus decorxjs (Walker). 



Smiera decora Walker, Notes on Chalc, Pt. 3, 1871, p. 54, c^. 



Thaumapus decorus Kirby, Journ. Linn. Soc. London, Zool., XVII., 1883, p. 56. — 

 Dalla Torre, Cat. Hym., V., 1898, p. 403. 



Brazil. 



Thaumapus masus (Walker). 



Smiera masus Walker, The Entom., I., 1841, p. 134, 9 cT. 



Thaumapus masus Kirby, Journ. Linn. Soc. London, Zool., XVII. , 1883, p. 56. — 

 Dalla Torre, Cat. Hym., V., 1898, p. 403. 



Brazil. 



Thaumapus walkeri Kirby. 



Thaumapus walkeri Kirby, Journ. Linn. Soc. London, Zool., XVII., 1883, p. 74, c^. 



—Dalla Torre, Cat. Hym., V., 1898, p. 403. 

 f Smiera luteipennis Walker, Journ. Entom., I., 1861, p. 173, 9. 

 Brazil : St. Paulo (Mr. Bates). 



Thaumapus acuminatus, sp. nov. 



Female. — Length 9 mm. Reddish-yellow ; a line on the scape above, the flagel- 

 lum, a triangular spot at apex of the scutellum and a transverse line at base, a spot 

 on the lateral mesothoracic lobes, a curved line anteriorly on the middle lobe, 

 interrupted medially, the extreme apex of the hind coxse, the large femoral teeth, 

 and some spots on the dorsum of the abdomen, black. The abdomen is long, lan- 

 ceolate and ends in a long stylus. The hind femora are armed with six large teeth, 

 the last tooth very large and tricuspi dated. 



Brazil : Santarem. One specimen. 



