Casey — A Revision of the American Paederini. 231 
gular sutures, tarsal structure and general type of sculpture. 
The group is peculiar to the American continents and com- 
prises the two following genera: — 
Body small in size, shorter and rather stouter in form, the head having 
coarse shallow polygonally crowded punctures, forming a reticulation, 
the pronotum granularly punctate, the elytra and abdomen rugosely 
punctured, the former more coarsely; head broadly arcuato-truncate at 
base, the eyes moderate, prominent; labrum large, with short parallel 
sides at base, the apex broadly angulate, with the angle truncate; an- 
tennae rather short, slender, feebly incrassate distally; ligula apparently 
unmodified at apex; labial palpi very slender, the third joint very short, 
aciculate; maxillary palpi long and well developed, the second joint 
long, slender, with very short sparse stiff hairs, the third elongate-oval, 
shorter than the second and more gradually narrowed toward base, the 
apical cavity very small, the surface densely clothed with short fine de- 
cumbent hairs, the fourth joint very small, obtuse and apparently 
minutely pubescent; gular sutures forming a single cleft-like line; neck 
between a fourth and fifth as wide as the head; prothorax circular, the 
apex not prolonged at the middle; prosternum well developed before 
the coxae, minutely and feebly carinulate throughout along the median 
line, having a small transverse gutter just behind the apical margin; 
elytra shorter than wide, with broadly rounded basal angles, the hind 
wings probably obsolete; abdomen short and broad with arcuate sides, 
the segments not impressed; legs somewhat slender, the tarsi short 
and rather thick, the anterior not at all dilated, the posterior with the 
first joint slightly less than half the entire length and more than twice 
as long as the second, the third extremely short, much wider than long, 
the fourth strongly lobed, including the lobe about as long as wide, the 
lobe truncate, the fifth short and very slender, extending only slightly 
beyond the apex of the lobe of the fourth joint; claws small, slender 
and feeble. Eastern North and Central America............ Stilicopsis 
Body larger, more elongate and more convex, the upper surface throughout 
simply and only moderately coarsely punctate; antennae very slender 
and much elongated, only the last three joints gradually and feebly in- 
crassate, the joints very slender, each swollen anteriorly toward apex; 
labrum very large with the basal part rounded at the sides, the middle 
three-fourths of the apex having the sides converging to the trans- 
versely truncate median part, which is nearly one-half the total width; 
eyes well developed, prominent; base more rounded; palpi and gular 
sutures nearly as in Stilicopsis; neck barely a fifth as wide as the head; 
prothorax elongate, rounded at the sides and gradually narrowed to- 
ward base, the apex narrowly prolonged in the middle to the neck, this 
lobe truncate at tip and narrower than the base; prosternum longer be- 
fore the coxae, broadly constricted behind the apex, finely carinate 
along the middle throughout; legs slender, the tarsi nearly as in Stili- 
copsis but rather more slender and elongate, the basal joint relatively 
still longer, constituting half the entire length. North and Central 
American Atlantic COASt....sseesecee rece sececcessesseess Stamnoderus 
