498 Coleopterological Notices, VII. 



total width; third palpal joint stout and oval, the subulate fourth joint oblique 

 and slender. Antennas as long as the head and prothorax, the club abrupt and 

 strong; second joint as long as the first but much thinner, nearly twice as long 

 as wide, a little longer than the next two ; three to six subequal, not apprecia- 

 bly narrower than the second and distinctly wider than long ; seventh and 

 eighth equal in width and % wider, strongly conic in apical half, }4 ^J^d % 

 wider than long; ninth and tenth very feebly obtrapezoidal, the sides nearly 

 parallel, fringed about the apex with short whitish hairs, % and once wider 

 than the eighth, similar in form but increasing slightly in size, % wider than 

 long; eleventh scarcely as wide as the tenth, not quite as long as the two pre- 

 ceding, longer than wide, ogival but not oblique at apex. Prothorax broadly 

 subovoidal, scarcely as long as wide, % wider than the head, widest before 

 apical third; sides broadly rounded, convergent and less arcuate toward base, 

 the latter arcuate, wider than the apex; basal angles obtuse and blunt; disk 

 evenly convex, with two small approximate and confluent foveas in the middle 

 near the base. Scutellum triangular, flat. Elytra entire, slightly overlapping 

 toward tip as usual, rhomboid-oval, narrowly parabolic at apex, widest and 

 subprominent at the sides just before the middle, scarcely % longer than wide, 

 2% times as long as the prothorax and barely % wider ; humeri slightly evi- 

 dent; humeral plica and impression both very small, the inner fovea more dis- 

 tinct, subsutural impressions obsolete, the suture finely beaded basally, the 

 bead expanding and strongly enveloping the scutellum at base. Legs slender, 

 the femora very feebly clavate, the anterior more distinctly. Length 0.68 

 mm. ; width 0.28 mm. 



Pennsylvania (Westmoreland Co.). 



No secondary sexual characters are visible in the two speci- 

 mens before me. The first four ventral segments are equal and 

 rather short, the last two moderately long. 



XEI.ADIUS n. gen. 



The single species composing this genus has an elongate and 

 very convex form of body, the elytra narrowed very gradually to 

 the extreme base of the prothorax and without trace of humeri, 

 somewhat as in the subgenus Parascydmus of the Scydmaenini ; 

 they are probablj^ perfectly connate. The head is but feebly in- 

 clined, the neck wide, with ihe constriction simple and well ex- 

 posed, the antennae rather widely separated by the subvertical 

 front, the clypeus very short and broadly subtruncate at tip, the 

 labrum short but broad and truncate, and the mandibles moderate 

 in size, evenly arcuate and with the apices finely aciculate. The 

 maxillary palpi are of the usual form in the Scydmsenini. 



The middle and hind coxse are contiguous, the latter trans- 

 versely suboval, not extending quite to the sides of the bod}^ but 



