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 incrassatedistally; 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; presternum 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 Stamnoderus 



