8 THE CANADIAN ENTOMOLOGIST. 



indicated as being in the collections of the Illinois State Laboratory of 

 Natural History (Accession No. 4^,08^). 



This species evidently differs considerably from the type species, 

 citriiius Howard ; it must be considerably larger and more slender, the 

 colour is brown, not light orange ; the mesonotum is differently sculp- 

 tured, namely, polygonally, not finely, transversely lined ; the sheaths of 

 the ovipositor not nearly black at tip but concolorous ; the joints of the 

 funicle somewhat longer, and the antennal club shorter, not as long as the 

 funicle, even ; and no oblique hairless line on the fore wing is noted for 

 the type species, nor a ring-joint in the antennse. 



Family Pteromalidae. 

 Subfamily Sphegigasterinae 



Tribe Sphegigasterini. 

 Genus Urios Girault MS. 



I. Urios vestali Girault. 



This nearly wingless species, which was described in the Journal 

 of the New York Entomological Society (December, 1911), was captured 

 by Mr. A. G. Vestal at the Devil's Hole, near Havana, Illinois. It was 

 found in an ant's nest {Pheidole vinelandica Forel.), April i, 19 11. The 

 nest of the ant was in sandy soil, in a bunch grass area. Mr. Vestal 

 stated that, casually, he was unable to distinguish the pteromalid from the 

 ants. In oth^r words, it closely mimics the host ant. 



Family Eulophida^. 



Subfamily Entedoninae. 



Tribe Omphalini. 



Genus Astichus Foersler. 



I. Astichus bimaculaiipeiuiis, new species. 



Normal position. 



Female. — Length, 1.85 mm. Funicle not ringed with white, scutellum 

 not smooth, and without grooved lines, parapsidal furrows not very 

 distinct, cilia of wings not in rows, dense; wings with two maculae. 

 Species large for the genus. 



General colour metallic green, the held and pronotum metallic bluish^ 

 the face œneoin just dorsad, purplish just ventrad, of the insertion of the 

 antennse; the dorsum of the abdomen, except the metallic green proximal 

 segment, dark, purplish black; metanotum with aeneous reflections ; scape 

 pallid dusky ; thoracic pleura and cox?e metallic dark bluish, the femora 



