15 
FF Metepistemum narrow throughout with sides parallel; eyes deeply 
emarginate. 
G Cheeks before the eyes very short, almost linear; foreeoxal 
cavities widely open behind, intereoxal piece very thin, not 
widened behind; last ventral segment of male more or less 
excavated. Pidonia Muls. 
GG Cheeks nearly as long as width of mandibles at the base; fore- 
coxal cavities nearly closed behind with intereoxal piece 
widened behind; last ventral segment of male normal. 
IdiopiAonia n. gen. 
A A Prosternura convex, sulcate only near the anterior margin; prothorax not tubercidate 
on the sides, rarely strongly angulate (as in L. proximo, Say). 
B Pronotum with hind angles acutely produced over the humeri; without a strong 
basal constriction, so that the line which forms the side margin of the pronotum 
is continued as the side margin of the elytra. 
C Pronotum campanulate; 1st segment of hind tarsus with pubescent sole; 
foreeoxal cavities open behind; Bides of elytra parallel, 
D Antennae without poriferous impressed areas; 3rd hind tarsal segment 
cleft nearly to tne base; transverse dorsal impression behind the eyes 
separating head from neck very feeble. Grammoptera Serv. 
DD Antennae with poriferous impressed areas; 3rd hind tarsal segment cleft 
only to the middle; transverse dorsal impression separating head from 
neck abrupt and distinct. Alosterna Muls. 
CC Pronotum trapezoidal; 1st segment of hind tarsus usually without a pubescent 
sole. 1 
D Elytra cuneiform. 
E Antennae with segments 5 to 11 inflated and distinctly wider than 3 and 
4; pronotum polished and nearly impunctate, with the hind angles 
subacute. 
F Elytra dehiscent and rounded at the apex, front of head very short; 
pronotum wider than long, and very narrowly constricted in 
front. Pseudo strangalia n. gen, 
FF Elytra hardly dehiscent, broadly subtransversely truncate at apex; 
front of head very elongate; pronotum longer than wide, rather 
broadly constricted in front. Cyphonotida Csy. 
EE Antennae with distal segments 5 to 11 not inflated; pronotum strongly 
punctured, with hind angles acute or laminate. 
F Labial palpi with terminal segment short and wide, length approxi- 
mately twice the width, usually truncate at the apex. 
G Form of body only moderately slender, with elytra not attenuate 
on caudal half and lateral margins nearly straight; pronotum 
narrowly constricted in front. 
H Distal segments of antennae without distinct, poriferous 
areas, rarely with definite pits on distal extremities. 
Leptura L. 
(Strangalia Serv.) 
HH Distal segments of antennae with large, distinct, poriferous 
areas. Typocerus Lee. 
GG Form of body very slender, elytra attenuate on caudal half and 
strongly sinuate on lateral margins, abdomen extending far 
behind elytra. 
H Front of head very short, length from front of eyes to base of 
mandibles much less than half the width; pronotum very 
broadly sulcate in front across the dorsum; male with 
terminal segments of abdomen inflated and strongly ex- 
cavated beneath. Bellamira Leconte. 
HH Front of head of moderate length, from front of eyes to base 
of mandibles not less than half the width; pronotum sub- 
campamil&te, not broadly sulcate across the dorsum; 
male with terminal segments not inflated, sulcate beneath. 
Genotype (Strangalia) delicata Lee. Neobellamira n, gen. 
1 See page 4, 
61136 — 2J 
