112 AMERICAN HYMENOPTERA. 



Cyaneous, antenncs black, wings with brilliant blue reflection. 



Length, 27-34 mm. ; wing, 16-18 mm. ; spread, 34-40 mm. ; antenna?, 

 14-20 mm. 



Cyaneous; head opaque; ocelli small, distant from tops of eyes; 

 eyes large, emarginate ; antennae black, much shorter than body; cly- 

 peal foveas distinct ; thorax and abdomen cyaneous ; thoracic sutures 

 deep, crenulated ; mesonotum opaque, slightly pubescent and punc- 

 tate, with two more of less pronounced tubercles on the anterior edge ; 

 parapsidal furrows deep and crenulated, often with one or more paral- 

 lel carinse on the median lobe ; metapleurae smooth and shining or 

 punctate around the edge ; metathorax finely rugose-striate with a dis- 

 tinct median furrow. 



Wings black with bright purplish-blue reflection ; stigma lacking ; 

 discocubital nervure arcuate ; nervulus interstitial to antefurcal ; ner- 

 vellus broken well above the middle ; legs with claws pectinate ; abdo- 

 men smooth and shining with short sparse pubescence ; stigmata 

 quite pronounced ; ovipositor reddish. 



In describing this species I have compared 9 and cf speci- 

 mens with the original description. 



Type. — 9 and cf . Location unknown. 



Distrihition. — Brazil ; Dutch Guiana. 



This species was described by Brulle from specimens taken 

 at Cayenne, Caternaut ; Brazil (Capit des Mines) ; and I 

 have before me specimens from Surinam, Dutch Guiana. 



Nothing is known of the life history, habits or hosts. 



Location of specimens. — British Museum. Massachusetts 

 Agricultural College, 9 and cf , Surinam, Dutch Guiana. 



Tliyreodoii niorosiis Sm. 



Thyreodon morosus Smith, Descr., New Spec. Hym., p. 230, n. 1, 



9 1879. 



" " Cameron, Biol. Centr. Amer., Hym., I, p. 289, 



n. 3 1886. 



Dalla Torre, Cat. Hym., Ill, p. 186 1901. 



" " Szepligeti, Gen. Ins., Hym., 34'"^ Fasc, p. 



25, n. 16 1905. 



" pulchricornis Szepligeti, Ann. Hist. Natur. Mus. Nat. 



Hung., IV, p. 133, Marcapata, Peru 1906. 



Black ; wings dark brown with violet-purple reflectio7t ; antennce 

 white to yellowish-white with base and apex black. 



Length, 23-33 mm. ; wing, 16-24 mm. ; spread, 34-51 mm. ; antennae, 

 15-20 mm. 



Black ; vertex and frons more or less reticulate, with a minute median 



