168 ME. W. H. ASHMEAD OX THE PARASITIC HYMEN OPTEEA 



genus Diglyphus, in which they differ in having a 4-jointed funicle 

 and distinct parapsidal furrows. The posterior tibiae in both 

 species are two-spurred. 



Subfamily Entedokin^. 

 Omphale, Saliday. 



Omphale vaeicoloe, sp. n. 



S $ . Length 1'4 to 2-8 millim. Variable in colour from a 

 dark blue to metallic green, or bronzed, and rather coarsely scaly- 

 punctate. The female is most frequently metallic green, with, 

 the coxse and femora metallic, the rest of the legs and the scape 

 yellowish ; flagellum dark brown, pubescent, sometimes wholly 

 steel-blue or dark blue, with the upper surface of thorax bronzed 

 or metallic green, the coxse and femora blue, and more rarely 

 with, the tibisB brown or blue. The blue specimens usually have 

 only the tarsi white. Antennae 9-jointed, the club 3-jointed, the 

 funicle 4-jointed ; the pedicel is smooth, obconic ; the first funicle- 

 ioint is the longest, nearly three times as long as thick, the fol- 

 lowing joints subequal, the fourth being only a little longer than 

 thick. Wings hyaline, very finely pubescent, the pubescence 

 arranged in faint lines ; th.e venation yellowish, the submarginal 

 vein about two thirds the length of the marginal, the stigmal very 

 minute, ending in a small round stigma, tbe postmarginal vein 

 short, but still longer than the stigmal. Metathorax very short, 

 nearly in a vertical line with, the tip of the scutellum ; the spiracles 

 large, oval ; the metapleura divided by a grooved line that extends 

 to the base of the hind coxse. Abdomen sessile, acutely pro- 

 duced at tip, and longer than the head and thorax united ; the 

 sheatbs of ovipositor prominent. 



The male is smaller and very variable in size and colour, although 

 most frequently blue or bluish green with white tarsi, more rarely 

 metallic green. The antennae are 9-jointed, the club 2-jointed, 

 the funicle S-jointed, the joints of the latter being pedieellated 

 and furnished with whorls of long white hairs ; the marginal 

 vein is not longer than the submarginal, and the postmarginal is 

 sometimes wanting ; while the abdomen is ovate, shorter than 

 the thorax. 



Hah. St. Vincent. 



Described from 8 male and 27 female specimens. 



