NORTH AMERICAN COLEOPTERA. 215 



very short. Antennae short; basal joint very robust. Maxillary palpi large; 

 basal joint small, slender, second longer, robust, sublunate, third very large, 

 flattened, subsecuriform, much longer than the first two together, fourth very 

 minute, in the form of a very short robust spine, erect, protruding from the 

 apex of the third. Labial palpi extremely small, slender; third joint appar- 

 ently long and slender, second scarcely shorter and distinctly more robust, 

 basal joint not visible. Mandibles Jong and slender. Gular sutures contigu- 

 ous throughout. Labrum short, very broad, strongly arcuate, with a minute 

 median emargination slightly wider than deep, on each side of which there 

 are two exceedingly minute, approximate and robust teeth, upper surface hav- 

 ing a fine median, longitudinal carina. Legs slender; anterior tarsi not at 

 all dilated; first four joints of the posterior decreasing uniformly and rapidly; 

 in length, first slightly longer than the fifth. Prosternum having a fine, 

 strongly elevated, median carina, slightly less elevated at the anterior margin; 

 under surface of the neck carinate. 



The exact relationship of this genus is not apparent; it 

 is different in appearance from any of the other Psecler- 

 oicl genera with which I am familiar, and in fact appears 

 to be a transitional form having uncertain affinities. The 

 labial palpi are very minute and in their position in the two 

 representatives before me are so deeply placed that it is im- 

 possible to give their exact structure. 



The principal points of departure from the normal P^deri 

 are in the peculiar short antennte and spiniform — not subu- 

 late, oblique and retractile — terminal joint of the maxillary 

 palpi, also in the large third and small robust second joint 

 of that organ. The coxEe are normally Psederoid. 



L. brevicornisn. sp, — Slender, pale ochreous-testaceous throughout; elytra 

 slightly darker, castaneous except near the base; pubescence extremely short, 

 sparse, very evenly distributed throughout; integuments thick, opaque, very 

 coarsely scabrous, not at all shining. Re'td slightly longer than wide; sides 

 parallel, nearly straight; base truncate, narrowly and distinctly sinuate in 

 the. middle; angles moderately broadly -founded; surface transversely and 

 moderately convex, coarsely and very densely granulose; eyes moderate, 

 slightly convex, on the sides at a little less than twice their length from the 

 base, very coarsely granulate; antennae a little shorter than the head, dis- 

 tinctly clavate, funicle slender at base, posteriorly and strongly geniculate; 

 basal joint robust, one-half longer than wide, second slightly less robust, 

 subglobular, three to six very small, very slightly wider than long, equal, 

 scarcely more than one-half as wide as the second, seventh slightly wider, 



