STAPHYLINID/E. 17 



male of insolens the abdomen is not quite so broad as in the female, 

 and the sixth tergite is trapezoidal, transversely truncate at tip. 

 the truncature feebly and vaguely crenulate, the surface at apex 

 bounded at each side by a feebly oblique narrow straight and even 

 carina, the general surface of the segment strongly micro-reticulate 

 and with numerous large cariniform granules. 



Lamiota n. subgen. 



Mesosternal process rather long, extending nearly to apical fourth 

 of the coxae, rather wide, the apical prolonged part becoming paral- 

 lel, with its apex rounded and separated from the short and very 

 broad, angulate metasternal projection by a moderate interval; the 

 first four joints of the hind tarsi are equal, the infra-lateral carinee 

 of the head very fine and feeble, though nearly entire, and the eyes 

 moderate in size. The type is the following: 



Atheta (Lamiota) keeni n. sp. Rather stout, moderately convex, strongly 

 shining though sharply micro-reticulate, the punctures fine but subgranose, 

 the abdomen minutely and feebly, transversely strigilate; black, the elytra 

 piceous, the legs and antennal base pale flavo-testaceous; remainder of the 

 antenns black; head well developed, with a small impressed puncture in 

 both sexes, the eyes rather prominent, at their own length from the base; 

 antennae rather long and very gradually and moderately incrassate, the 

 outer joints wider than long; prothorax strongly transverse, much wider 

 than the head and slightly narrower than the elytra, the parallel sides sub- 

 angulate before the middle; elytra moderately transverse, much longer 

 than the prothorax, very finely but sharply, not very densely punctato- 

 granulose; abdomen almost as wide as the elytra, nearly sculptureless, sub- 

 parallel, very feebly narrowed toward tip, the fourth and fifth tergites equal 

 in length. Male with the pronotum impressed in median third from 

 near the apex to the base, the sixth tergite with a long pointed compressed 

 process at each side of the broad apex, the edge between the processes evenly 

 and broadly arcuate and tuberculato-crenate; female with the pronotal 

 impression narrow, very feeble and only visible basally. Length 3.0-34 

 mm.; width 0.75-0.85 mm. British Columbia (Metlakatla), Keen, 452. 



This strikingly distinct species is dedicated with pleasure to 

 Rev. J. H. Keen, who has made many interesting discoveries among 

 the small clavicorn Coleopteia of the northern coast of British 

 Columbia. 



Delphota n. subgen. 



The body is rather small in size, the abdomen parallel, the 

 mesosternal process very acute and aciculate at apex but not pro- 

 longed beyond the middle of the coxae, separated from the very 

 T. L. Casey, Mem. Col. I, Sept. 1910. 



