HYMENOPTEROUS FAMILY STIiPHANID^.. 719 



separated by a distinct sulcus. Petiole stout, irregularly rugose, 

 basall}^ more coarsely, much shorter than the remaining feebly 

 shining part of abdomen. Terebra longer than body, its sheaths 

 entirely black. Hind legs with the coxge finely coi'iaceous ; 

 femora tridentate, tibije constricted beyond middle and longer 

 than femora, ; hind tarsi five-jointed in both sexes. 



Black ; antennse basally brown ; mandibles basally ferruginous, 

 cheeks white-marked ; abdomen rufescent, apically black, or 

 entirely black; legs brown, rufescent beneath, their joints 

 whitish. Wings basally hyaline, centi-ally and apically slightly 

 infuscate. 



Length 8-17 mm. 



Habitat : Germany, France, and Central Europe. 



The tridentate hind femora and five-jointed hind tarsi will 

 suffice to distinguish this species § , and the only other d with 

 the former character {borneensis Sauss.) is nearly twice as large. 



2. ANTINORII Grib. 



Megischus antinorii Gribodo, p, 346, J . Stej)hanus ant. Schlett., 

 p. 108; W. A. Schulz (2), p. 16, $ . 



5 . Frons moderately shining, densely aird irregularly, not 

 arcuately, reticulate rugose. Five frontal tubercles (not six as 

 sta,ted by Gribodo in his original description), of nearly equal 

 size, a triangular space in front of the anterior ocellus shining- 

 smooth. Vertex densely, coaxsely, and deeply rugose-punctate, 

 with five curved carinse in front and a longitudinal impression 

 behind. Occiput coarsely but diflusely and not deeply rugose- 

 punctate, without longitudinal impression. Posterior margin of 

 head sharply bordered. Cheeks I'ather shorter than scape and 

 as long as second flagellar joint, shining smooth and diflusely 

 punctate. Temples with a smooth shining protubei-ance near 

 eyes (as in gigas), above it coarselj' and deeply punctate, below 

 densely and coarsely rugose-punctate. Antennae unusually short, 

 32-jointed, reaching only to the base of median segment; second 

 flagellar joint two and a half times as long as first, third only as 

 long as second. Neck weakly transrugose, separated by a right- 

 angled impression from the semiannulai-, wdiich is densely and 

 coarsely rugose-punctate, with a broad smooth posterior margin. 

 Prosternum shining, anterior third finely rugose-punctate, remain- 

 der smooth with very sparse and deep punctures. Meson otum 

 entire, centrally almost smooth, otherwise very coarsely, but not 

 deeply or densely rugose-punctate. Scutellum shining, with a 

 few punctures on the lateral lobes, and the borders of central 

 lobe finely striated. Mesopleuras densely and coarsely reticulate, 

 with a smooth shining space below tegulse and above middle 

 coxse. MetapleurfB prominent, coarsely reticulate rugose, with a 

 broad, deep, and curvately carinate impression in front and a 

 similar smoother impression behind. Median segment discally 

 extremely coarsely reticulate, laterally rugose, separated from 



