INHABITING NORTH AMERICA. 17 



margin with a spot on the middle of the margin, which is 

 also generally connected with the eonmion middle one. 

 Fe/itev glabrous, black, often with a slight testaceous shade 

 before. 



Not uncommon beneath stones, ^'C. Found also by Mr. T. 

 Nuttall on the Missouri. It has been referred to the genus 

 Agra, but the palpi arc decidedly those of Odacantha as de- 

 scribed by M. Latrcille, 



S. O. dorsalis. — Head black ; thorax rufous ; elytra testa- 

 ceous ; suture black. 

 Length tliree-tenths of an inch. 



Odacantha dorsalis. Fuhr. Si/sl. Ehut. I., p. 229. 



Hf^ad black ; clifpeiis, labmm, innuth, and anlenim rufous. 



Thorax cylindrical, somewhat contracted before the base, 

 punctured; punctures numerous, minute, sparse or want- 

 ing on the disk; a longitudinal dorsal im|)rcsscd line, and 

 an obsolete, dilated, dusky vilta on each side. 



Elytra yellowish-white, striate ; strife regularly and distinct- 

 ly punctured ; a common blackish sutural line, dilated 

 before the tip. 



Pectus |)ale rufous. 



Feet testaceous; tarsi, penultimate joint bilobate. 



Venter blackish. 



Inhabits the southern states. 



This ought unquestionably to form a distinct genus from 

 that of the preceding species. 



Genus Scaritks. Fab. 



Anteiior tibia cmarKinatc and crenatc ; elytra entire ; ari- 

 tentif siiort, tliird and fourth joints moniliform, subequal ; 

 labrum sliort, dentated ; mandil)les elongated, dentate ; 

 palpi fdiform; tongue dilaieil, very short, emarginatc at 

 tip; thorax rounded behind; body subcylindiical. 



VOL. II. C 



