Mr. F. Smith on some new species of Exotic Hymenoptera. 31 



the thorax above and on the sides covered with a fine silvery 

 pile, most sparing on its disc ; abdomen red, smooth and shmmg ; 

 a few long pale hairs on the apical segment. 



Hab. Brazil. ••+!,„ 



Of this species I have only seen the two specimens in the 



British Museum. 



Genus Trigonopsis, Perty. 

 T. affinis, n. sp. 

 Female (length 7^ lines) black : head smooth and shining, 

 the clypeus reddish yellow, armed with five teeth, the two 

 lateral ones much stouter than the other three; the mandibles 

 and two basal joints of the antennje reddish yellow, the former 

 black at their tips; the palpi yellow, the basal margin of the 

 neck and also that of the metathorax frmged with golden 

 pubescence, which is also scattered on its sides; there is also a 

 patch of the same beneath the wings and on the hinder margin 

 of the tubercles ; the metathorax above has a broad elongate 

 furrow, is transversely striated, and rugose at the sides and 

 apex ; the tegulse and nervures of the wings are pale ferrugmous ; 

 a dark cloud crosses the wing from the marginal cell to the 

 apex of the third discoidal cell, and also tips the posterior wmgs ; 

 a second cloud traverses the transverse portion of the externo- 

 medial nervure; the apical half of the anterior femora, the 

 tibise and tarsi, and also the intermediate tibise, ferrugmous; 

 abdomen ferruginous, its petiole black. 



Hab. Brazil. . „ ^, ,,^ ,, , 



This species is from the collections of Messrs. Wallace and 

 Bates, and was captured at Para. In my own, and also in the 

 collection of W. W. Saunders, Esq. 



T. violaceus, n. sp. 



Male (length 7| lines) : head violet, smooth and shining, the 

 clypeus produced in front; the mandibles dark ferruginous; the 

 deep lateral depressions on the face clothed with silvery pile ; 

 antennse black ; thorax black, the neck, pro- and meso-thorax, 

 the scutellum, and a space on each side of the deep longitudinal 

 channel of the metathorax very smooth and shining ; the channel 

 transversely sulcate, the sides and apex of the metathorax rugose ; 

 at its base and also under the wings a patch of silvery pile ; the 

 legs deep violet, the abdomen bright violet ; the wmgs marked 

 as in the preceding species, but rather darker. 



Hab. Brazil. 



Captured also by Messrs. Wallace and Bates. One specimen 



in the British Museum. 



