ASHMEAD : CLASSIFICATION OF THE CHALCID FLIES 519 



distinct parapsidal furrows. It also resembles Stenomesius Westwood but is easily 

 separated by the pubescent eyes, and by the longer and more sessile abdomen. 



Sympiesomorpha brasiliensis, sp. nov. 



Female. — Length 3 mm. Black ; the abdomen is seneous black, with a large 

 rufous spot at base both above and beneath ; scape and legs, including the cox?e, 

 honey yellow, the tips of the coxse and the trochanters whitish ; fiagellum black. 

 Wings hyaline, the tegulse and veins pale yellowish. The head is smooth, with a 

 few minute punctures in front ; thorax reticulately punctate, clothed with whitish 

 hairs, the metanotum with a sharp median carina. The abdomen is ovate, 

 depressed, about as long as the head and thorax united. 



Brazil : Chapada, in September. One specimen. 



Sympiesomorpha obscura, sp. nov. 



Female. — Length 1.8 mm. Black with a bluish tinge, the head in front and the 

 metapleura metallic greenish, the abdomen aneous black, the dorsum with a yel- 

 lowish band before the middle, the base before the band being blue, the venter with 

 a yellowish spot near the middle ; the scape and legs, except the coxae and most 

 of the femora, are pale yellowish or yellowish-white ; flagellum black. Wings hya- 

 line, the veins yellowish. 



Brazil : Corumba. One specimen. 



Genus STENOMESIUS Westwood. 

 Stenomesius dimidiatus, sp. nov. 

 (Plate XXXIX., Fig. 3.) 

 Female. — Length 2.1 mm. Flavo-testaceous, the head in front below pale yel- 

 lowish, the scutellum subfuscous, the metathorax and apical half of the abdomen 

 black ; scape and legs, including the coxse, pale yellowish ; wings hyaline, the front 

 pair with a fuscous spot from the apex of the stigmal vein. The head is smooth, 

 the thorax, and especially the middle mesothoracic lobe, is rugulose, the scutellum 

 coriaceous, the furrows with large punctures ; the metanotum has a sharp median 

 carina and is transversely regulose on each side. The abdomen is ovate, smooth and 

 polished, except the petiole, which is finely rugulose. 

 Brazil : Chapada. One specimen. 



ALOPHUS Ashmead, gen. nov. 



This genus falls in between Diglyphomorpha Ashm. and Sympiesis Forst.; it comes 

 nearest to the first mentioned but differs in not being metallic, by having ten-jointed 



