470 MEMOIRS OF THE CARNEGIE MUSEUM 



T/ioracantha apta Walker, Trans. Ent. Soc. London (3), I., 1862, p. 384, (T. — West 



wood, Thesaur. ent. Oxon., 1874, p. 153 ; PI. 28, f. 3. 

 Acrostela apta Shepp, The Entom., XXVI., 1894, p. 188.— Dalla Torre, Cat. Hym., 



. v., 1898, p. 366. 



Brazil : Santarem and Villa Nova ; Chapada, in March, April and November; 

 Santarem. Twelve male and two female specimens. 



Thoracantha eomandii Gueriu. 

 Thoracantha romandii Guerin, Iconogr. Regne anim., VII., Ins., 1845, p. 415. — 

 Dalla Torre, Cat. Hym., V., 1898, p. 366. 

 Colombia. 



Genus UROMELIA Kerby. 

 Uromelia striata (Perty). 



Thoracantha striata Perty, Delect, anim. artic. Brasil, 1833, p. 134; T. 28, f. 15 



and 16. — Blanchard, Hist. nat. Ins., Ill, 1840, p. 257. 

 Uromelia striata Kirby, Journ. Linn. Soc. London, Zool., XX., 1886J p. 37. — Dalla 



Torre, Cat. Hym., V., 1898, p. 367. 

 ■Thoracantha jfabellatusW estwood, Proc. Soc. London, III., 1835, p. 52, (^. 

 Thoracantha aculeata Westwood, ojncs cit., 1835, 9. 

 Chalcis {Thoracantha) aculeata Blanchard, Cuvier : Regne anim., Ed. 3^, Ins., 11. 



1819 ; T. 1 13, f. 8. 

 Thoracantha aculeata Westwood, Thesaur. ent. Oxon., 1874, p. 154 ; PI. 28, f. 9. 

 Lasionychus flabellatus Shipp, The Entom., XXV., 1894, p. 188. — Dalla Torre, Cat. 



Hym., v., 1898, p. 367. 

 Brazil : Santarem. Five specimens. 



Genus DICCELOTHORAX Ashmead. 



Allied to Lsetocantha Shipp, but easily distinguished by the deep impressions on 

 the mesonotum and the scutellum, and by the very broad and different shape of the 

 scutellar processes, which form a broad shield over the abdomen. 



Diccelothorax platyceeus, sp. nov. 

 (Plate XXXV., Fig. 3.) 



Female. — Length 3.8 mm. ^neous black, the antennae, the legs, except the 

 coxse and a median longitudinal stripe on the closely united scutellar projections, 

 testaceous. The disk of the mesonotum and the scutellum are concavely excavated, 

 the bottom of the concavities being smooth and highly polished, the scutellar proc- 

 esses being longitudinally striated. The pronotum is greatly elevated and coarsely 



