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PROCEEDINGS OF THE NATIONAL MUSEUM 



VOL. 74 



Temples nearly flat; occipital carina not very prominent; vertex 

 behind ocelli only slightly higher than at posterior ocelli; frons 

 weakly impressed in middle ; eyes convergent below in about the ratio 

 5:4; combined face and clypeus very slightly longer than broad, 

 face rather densely finely punctate with a distinct longitudinal im- 

 pression on each side of mid- 

 dle; clypeus nearly half as 

 long as interfoveal line, slop- 

 ing toward apex but not dis- 

 tinctly inflexed, broadly trun- 

 cate at apex; antennae as 

 long as body; flagellum cy- 

 lindrical throughout, slightly 

 thicker toward apex. Thorax 

 shining but not polished, 

 rather densely finely punc- 

 tate, foveolate along the lat- 

 eral sutures and sternauli, 

 pronotal and subalar impres- 

 sions striate ; scuteilum weak- 

 ly convex; apical carina of 

 propodeum more or less dis- 

 tinct laterally; subdiscoideus 

 below upper third of postner- 

 vulus; coxae opaque, densely 

 and finely punctate. Abdo- 

 men, except first tergite, sub- 

 opaque, very finely coria- 

 ceous; ovipositor sheath as 

 long as abdomen exclusive of 

 first tergite. 



Black with profuse pale 

 yellow or white markings as 

 follows : Broad uninterrupted 

 orbits, face, clypeus, mandi- 

 bles at base, scape in front, 

 broad annulus on flagellum 

 centering on joints 10-11, up- 

 per and anterior margins of pronotum, propleura largely, spot on disk. 

 of mesoscutum sometimes prolonged toward the front along notauli, 

 scuteilum and its basal carinae, pleura and mesopleurum and meta- 

 and mesosternum except more or less broadly along sutures and 

 usually sternauli, metasternum entirely, upper division of meta- 

 pleurum confluent with a median spot behind postscutellum, pro- 

 podeum behind carina except oval median apical spot, base of first 



Fig. 8. — Messatoporus discoidalis (Cresson) 



