28 MEMOIRS ON THE COLEOPTERA. 



inae very fine and feeble and not entire; antennae well developed, strongly 

 incrassate distally, the outer joints strongly transverse, the second evidently 

 longer than the third; prothorax strongly transverse, nearly as wide as the 

 elytra, very much wider than the head, parallel and strongly rounded at the 

 sides; elytra moderately transverse, much longer than the prothorax; ab- 

 domen much narrower than the elytra, parallel, the sixth tergite (d") differing 

 much from any of the nine preceding, being rapidly trapezoidal, with the 

 apex rather narrow, transversely truncate medially between the sides, which 

 are'slightly produced posteriorly in relatively wide, flat, lobiform extensions, 

 obliquely rounded at the sides but not carinate or thickened; sterna as in 

 the preceding species, except that the metasternal angle is rounded at tip; 

 basal joint of the hind tarsi evidently shorter than the second. Length 

 2.25 mm.; width 0.62 mm. New York (Catskill Mts.). 



The sexual characters of the male, abbreviated cephalic carinae 

 and antennal characters will distinguish this species at once among 

 its fellows. In the type the head betw r een the eyes has a large 

 rounded concavity, rather abruptly limited, and so regular that it 

 may be a normal character, especially as the specimen is mature 

 and with hard integuments. 



The three following species have male sexual characters very 

 much as in tractabilis and also apparently somewhat as in trunca- 

 tiventris and occidentalis, of Bernhauer. 



Atheta ordinata n. sp. Slender, moderately convex, dark piceous, the 

 head blackish, the elytra pale castaneous-brown, the legs pale flavate; ab- 

 domen black, feebly rufescent basally, moderately shining, strongly micro- 

 reticulate throughout, the punctures minute, rather sparse, close and asper- 

 ulate on the elytra; head small, but little wider than long, the eyes at nearly 

 their own length from the base, the carinae fine, feeble, extending only slightly 

 beyond the middle; antennae blackish, pale basally, moderately short, 

 gradually and rather strongly incrassate, the outer joints strongly transverse, 

 the last rapidly, obtusely pointed, as long as the two preceding, the second 

 moderately elongate and subcylindric, the third a little shorter, constricted 

 basally; prothorax but slightly transverse, parallel, evenly and strongly 

 arcuate at the sides, feebly and finely impressed along the median line basally 

 and with a feeble transverse basal impression, much wider than the head 

 and only very little narrower than the elytra, the latter moderately trans- 

 verse, with the suture only slightly longer than the prothorax; abdomen 

 long, parallel, narrower than the elytra, the fourth and fifth tergites 

 equal, the sixth (cf) rather narrow apically and broadly sinuate between 

 the rounded flattened lateral lobes, the outer sides of which are 

 extended anteriorly for a short distance, the surface very strongly reticulate; 

 mesosternal process extending to apical third of the coxae, becoming gradually 

 finely aciculate, moderately separated from the acutely angulate projecting 

 metasternum, the intervening space much depressed; hind tarsi rather long 

 and slender, the basal joint shorter than the second. Length 2.3 mm.; 

 width 0.45 mm. New York (Catskill Mts.). 



