222 Trans. Acad. Sci. of St. Louis. 



angles shorter, extending only to basal third, the elytra relatively 

 smaller and only just visibly wider than the head, about as long as 

 wide, the abdomen wider, being, at the middle, very nearly as wide as 

 the elytra. Male with the fifth ventral broadly and slightly flattened 

 toward the middle, the apex truncate, with a very shallow simple and 

 and broadly rounded sinus in fully median third; broad tip of the 

 sixth segment with a simple semicircularly rounded sinus in about 

 median fourth and about three times as wide as deep. Length 3.9 mm. ; 

 width 0.88 mm. New York (Long Island) to Virginia . . . lsitiusculus Csy. 



5 — Prothorax evidently shorter than the elytra. Body blackish-piceous in 



color, except the prothorax which is dusky rufous, the elytral apices 

 and legs throughout pale flavo-testaceous, the antennae dark rufo-testa- 

 ceous; punctures of the head and pronotum coarse and longitudinally 

 confluent, of the under surface of the former equally coarse and very 

 close-set but not distinctly confluent, of the elytra finer but strong and 

 rather sparse, of the abdomen very fine and notably sparse, the last two 

 surfaces polished; head longer than wide, the convex eyes at nearly 

 twice their own length from the base, the sides behind them rapidly 

 converging and broadly arcuate to the narrow neck; labral teeth unu- 

 sually long and acute; prothorax much longer than wide, two-thirds 

 as wide as the head, broadly rounded and very obsoletely subangulate 

 at two-fifths from the apex, the sides thence feebly converging and 

 nearly straight to basal fifth, thence strongly converging to the base, 

 strongly converging and straight anteriorly to the narrow neck; elytra 

 quadrate, parallel, one-half wider than the prothorax and about a 

 fifth longer, just visibly narrower than the head; abdomen parallel, 

 very feebly arcuate at the sides, as wide as the elytra; legs slender. 

 Male with the fifth ventral unmodified on the disk, the apex rectilinearly 

 truncate, with a very small, broadly triangular median process, wider 

 than long and obtusely angulate, the process slightly tumid on the 

 surface, the sixth segment with a broad, shallow and broadly rounded 

 apical sinus, nearly five times as wide as deep. Length 4.3 mm. ; 

 width 0.75 mm. New York, Pennsylvania and District of Columbia. 



rudis Lee. 

 Prothorax equal in length to the elytra. Body stouter but otherwise nearly 

 similar, pale rufo-testaceous in color, the abdomen broadly clouded 

 with piceous, the elytra more flavate, with the apex more broadly and 

 conspicuously pale and nearly luteous-white, the legs very pale honey- 

 yellow throughout; head nearly as in rudis but broader aDd less evenly 

 rounded at base, the latter being broadly and obtusely subangulate; 

 prothorax broader and more oval, the anterior angles, just behind api- 

 cal third, much more broadly rounded and subobsolete ; elytra larger, 

 subquadrate, only very slightly narrower than the head, two-fifths wider 

 and scarcely longer than the prothorax, strongly shining and somewhat 

 more sparsely punctured than in rudis; tarsi rather more elongate. 

 Male unknown. Length 4.3 mm.; width 0.8 mm. Rhode Island (Boston 

 Neck) apicalis n. sp. 



6 — Head broadly rounded or subtruncate at base 7 



Head strongly rounded or subangulate at base, generally ogival in form 



behind the eyes 10 



