NATURAL SCIENCES OP PHILADELPHIA. 371 



F. 1 a?viu s c ula, attenuata, picea, subamescens, tenuiter pubescens, capita 

 rotundata, vix parce subtilissime, pnnctulato, thorace ovato, latitudine longiore, 

 vix conspicue punctulato, profunde canaliculate, mox ante basin transversim 

 impresso; scutello piano et elytris subtilissime punctulatis ; abdomine laevi, 

 apice vix punctulato; antennis pedibusque piceo-testaceis. Long. 3-5 mm. 



Fort Tejon, California ; Dr. G. H. Horn. Tbis species is of the same size and 

 form as F. c i n g u 1 a t a, but differs by the much less obvious punctures of the 

 head and thorax, and by the strongly marked transverse impression just in 

 front of the base of the thorax, which is less narrowed behind. 



F. quadriceps, depressa, nigro-picea, nitida, subtiliter pubescens, 

 capite magno, basi late truncato, angulis posticis rotundatis, parce punctulato, 

 fovea frontali impresso, occipite breviter canaliculate ; thorace trapezoideo, 

 postice modice angustato, latitudine paulo breviore, punctulato, profunde 

 canaliculato ; scutello punctulato, baud canaliculato ; elytris^ thorace latiori- 

 bus, punctulatis, piceo-testaceis ; abdomine subtiliter punctulato, piceo ; an- 

 tennis fuscis, basi pedibusque testaceis. Long. 3-5 mm. 



One specimen, New York ; April, under a stone. This species differs re- 

 markably from all the preceding by the head being not rounded but quadrate. 

 The base is broadly truncate, the sides behind the eyes are nearly parallel, and 

 the hind angles are rounded. The last joint of the maxillary palpi is smaller 

 than in the genuine Falagrise, and the tarsi are much less elongated ; the first 

 joint of the hind tarsi is as long as the three following united, which are nearly 

 equal, and the whole tarsus is about two-thirds the length of the tibia. The 

 antenna? are not longer than the head and thorax, are less slender than 

 usual, and but slightly thickened externally. The abdomen is broader and 

 flatter than usual, and scarcely narrowed towards the base ; the dorsal seg- 

 ments are very finely punctulate, and the first three are impressed as usual, 

 but the impressions are not punctured, 



F. partita, nigricans, subtilissime pubescens, baud punctulata, capite 

 postice truncato, thorace ovato, latitudine baud longiore, profunde canalicu- 

 lato, scutello modice canaliculato, elytris paulo convexis ; pedibus testaceis, 

 antennis fuscis apice magis incrassatis. Long. 2 2-5 mm. 



Florida and Louisiana. This little species might be easily confounded with 

 F. dissecta Er., but is somewhat larger, and has the scutellum much less 

 deeply channelled, and not bicarinate. The antenna? in both are less slender 

 and less elongate than in our other species. 



*F. vaga, elongata, subdepressa, dense punctulata, subtiliter pubescens, 

 capite ad basin recte truncato, angulis posticis rectis rotundatis ; thorace lati- 

 tudine paulo longiore, postice modice angustato, medio late vage canaliculato ^ 

 elytris thorace latioribus, at haud longioribus ; abdomine fere lam, versus ba- 

 sin pallidiore, ano testaceo ; pedibus testaceis, antennis fuscis. Long. 3-5 mm. 

 One specimen, Lake Superior I refer this species to the present genus with 

 some hesitation, but the head is so much more strongly constricted behind, 

 that I am unwilling to refer it to Tachyusa. The head is truncate behind, with 

 the hind angles less rounded, and the neck less slender ; the sides behind the 

 eyes are parallel. The thorax is as wide as the head, longer than wide, ob- 

 liquely truncate each side at the apex, with the sides straight, converging 

 slightly behind, base broadly rounded ; disc flattened, feebly but broadly 

 channeled. Elytra distinctly wider than the thorax, flattened, truncate at tip, 

 with the outer angle acute ; abdomen slightly narrowed at the base, impressed 

 as usual, but with the impressions not punctured. Hind tarsi with the first 

 joint not as long as the three following, which diminish slightly in length. The 

 antenna; are longer than the head and thorax, slightly thickened externally, 

 but the outer joints are somewhat distant, and not closely placed, as in the 

 genuine Falagria; ; the first three joints are elongated as usual. The last joint 

 of the maxillary palpi is scarcely one-half as long as the preceding, and is very 

 slender and acicular, 



1866.] 



