EXOCIIILUM. 409 



strongly geniculate, but very distinctly intercepted nearly in its 

 centre. 



Ranye. World-wide. 



The species of this genus are mainly from Northern America ; 

 but one or two occur in Africa and others are very common in 

 Europe, though their range has hitherto been ascertained only as 

 far east as Palestine. It is of interest to find them in the 

 mountains of Assam. 



Table of Species. 



1 (2) Antennae as long 1 as thorax ; scutellum 



bordered ; clypeus produced barbaticum, sp. n., p, 409. 



2 (1) Antennae longer ; scutellum not 



bordered ; clypeus simple. 



3 (8) Wiugs fulvescent-hyaline ; metanotum 



reticulate. 



4 (7) Frons with a small ridge; scutellum 



not centrally impressed. 



5 (6) Head buccate ; scutellum convex ; 



external orbits hardly pale circumjiexum, L., p. 410. 



6 (5) Head narrow ; scutellum deplanate ; 



external orbits fiavous orbitale, Mori., p. 411. 



7 (4) Frons with a horn ; scutellum longi- 



tudinally impressed acheron, Mori., p. 412. 



8 (3) Wings strongly blackish; metanotum 



rugose diabolus, Mori., p. 413. 



301. Exochilum barbaricum, sp. n. 



c? $ . A stout species with very short antenna and bordered 

 scutellum. Head dull black and not posteriorly constricted, with 

 the mouth and face flavous, the 

 vertical and external orbits nar- 

 rowly red ; clypeus centrally pro- 

 duced into a subacuminate tooth ; 

 mandibles of equal length. An- 

 tennae setaceous, black, with the 

 scape basally pale beneath, of <j> 

 not and of d" hardly longer than 

 thorax. Thorax black, coarsely 

 punctate, with no notauli ; meta- 

 notum with oval spiracles and no 

 trace of areas ; extreme apical 

 margin of mesopleurse, and an 

 apical spot on metapleura3, red. 

 Scutellum convex and not im- 

 pressed, strongly punctate, red, 

 pi 116 with its sides black and stoutly 



Exochilum barbaricum, Mori. carinate. Abdomen clear red, 

 with the anus and extreme base 



of first segment black ; basal segment distinctly a little longer 

 than the terebra, with subapical spiracles. Leys red, with the 



