344 PSYCHE. [April .899 



D^ Median carina of the prozone frequently indistinct but some trace of it 

 is always present at least upon the anterior part of the prozone which is not 

 distinctly longer than the metazone. 



E' Hind tibiae never red usually distinctly blue with the sub-basal black 

 ring present and followed by a pale annulus or at least a pale spot 

 exteriorly, transverse bands of the hind femora distinct upon the disk as 

 well as upon the upper face ; tegmina distinctly spotted on the discoidal 

 field, with a linear series of alternate light and dark spots and generally 

 less distinctly maculate with smaller spots upon the anal field. 



Impiger Scudd. 

 Y} Hind tibiae never blue, usually red or green, occasionally with a 

 black sub-basal ring but this is never followed by a light annulus. 



F^ Sub-basal ring of the hind tibiae usually distinct, the tibiae them- 

 selves never green, tegmina obscurely spotted, sometimes slightly 

 exceeding the hind femora but scarcely ever equalling the abdomen ; 

 black bands of the hind femora usually distinct, but sometimes con- 

 fluent on the disk of the outer face ; sides of the prozone expanding 

 regularly and considerably ; inferior branches of the ovipositor merely 

 angulate upon the outer side not distinctly toothed. Keelcri Thos. 



F^ Sub-basal ring of the hind tibiae represented at most by a black 

 or fuscous spot upon the upper face ; tegmina generally exceeding the 

 abdomen as well as the hind femora ; inferior branches of the ovipositor 

 with a distinct tooth upon the outer side. 



G' Prosternal spine distinctly and regularly tapering upon the 

 apical half with the apex sub-acute ; median carina usually very 

 indistinct upon the prozone, frequently almost entirely obsolete ; 

 tegmina generally distinctly spotted in the discoidal field ; hind 



tibiae green or red Atlatiis Riley. 



G^ Prosternal spine not tapering upon the apical half, slightly 

 transverse and broadly rounded at the tip, median carina generally 

 distinct, through slight, upon the prozone, tegmina nearly plain 

 or more or less distinctly spotted in the discoidal field, hind tibiae 

 red, very rarely green. . . . Fi'mur-rubrum De Geer. 



D - Median carina of the prozone entirely wanting, prozone plainly longer 

 than the metazone ; fascia of the hind femora obsolete upon the disk of 

 the outer face; post-ocular stripe of the pronotum very indistinct or 

 wanting; tegmina plain or inconspicuously maculate; hind tibiae red 

 or green. ......... Fackardii Scudd. 



C ^ Second transverse sulcus of the pronotum nearly twice as distant from 



