STUDIES IN THE FOSSORIAL WASPS. 697 



Family Scoliid^e. 



Subfamily Elidin^e. 



Beaunsomeria, gen. nov. 



5 . Apterous ; mandibles acute at the apex, with a rather in- 

 distinct tooth on the inner margin near the apex ; antenna3 twelve- 

 jointed, the first joint of the flagellum very small and almost con- 

 cealed by the apex of the scape. Head almost rectangular, the 

 posterior angles slightly rounded ; eyes oval, touching the base of 

 the mandibles, rather small, separated by a distance at least as 

 great as their own length from the posterior angles of the head ; 

 ocelli absent, their position indicated by large punctures. Thorax 

 much narrower than the head ; pronotum rather longer than its 

 greatest breadth ; mesonotum very short, almost covered by the 

 pronotum, the tegute more or less developed ; scutellum narroAver 

 than the pronotum, broader than long ; median segment nearly as 

 long as the pronotum, flattened on the dorsal surface, broadened 

 from the base to the apex. 3ides of the head and thorax and base 

 of the abdomen thinly covered with long hairs. Abdomen longer 

 than the head and thorax combined, shining, the apical segment 

 long and more or less acute at the apex, stricture between the first 

 and second ventral segments well developed. Intermediate coxre 

 rather widely separated, posterior coxse contiguous, intermediate 

 and posterior tibiee spinose, tarsal ungues simple. 



cJ . Winged ; stigma rather large, situated at about three-fifths 

 from the base of the wing ; radial cell shorter than the stigma ; 

 three cubital cells, the second and third small, not reaching the 

 apex of the radial cell, each receiving a recurrent nervure ; cubital 

 and discoidal nervures not continued beyond the cells. Medial 

 cell of the hind wing not emitting veins from the apex. Antennre 

 in the typical species long and slender, thirteen-jointed, the first 

 joint of the flagellum almost concealed in the apex of the scape, 

 the antennte much longer than thp abdomen ; antennal tubercles 

 well developed. Head strongly convex ; ocelli present. First 

 abdominal segment with a short petiole, the segment, including 

 the petiole, a little longer than the se.cond segment, suddenly 

 widened at tlie apex of the petiole. Apical segment with a re- 

 curved spine, the apical emargination of the dorsal segment 

 shallow. Eyes entire, not emarginate. 



The characters givep here for the male will doubtless be found 

 not to apply ]bo all species of the genus ; but the important 

 characters in the neui'ajtion separating the males from Ilyzine 

 are the larger stigma, the blunter apex of th.e radial cell, the fact 

 that the cubital and discoidal nervures are not continued beyond 

 the cells as in j^Iyzine, and that no v.eins are emitted from the 

 median cell of the hind wing, there being two veins in Myzine. 



Type of the geiius, Braunsomeria quadfatice2)s. 

 Proc. Zool. See— 1912, No. XLVI. 46 



