DESCRIPTIONS OF NEW SPECIES. 41 



thorace latitndme haud breviore, ovato antrorsurn modice angastato, 

 confertim punctate, vitta dorsali ISBvi uitida, elytris thorace hand Longi- 

 oribus, micantibus, dense subtilius punctatis, abdomine confertim punc- 

 tulato, antennaruui basi pedibusque testaceis, coxis piceis. Long. *33. 



Illinois and Nebraska. Of the ordinary form of Phllonthus, 

 but remarkable for the dense punctuation of the thorax. The 

 antennae are piceous, with the first three joints testaceous, gradu- 

 ally thickened externally, with the outer joints nearly square, and 

 the last joint strongly acuminate beneath; the 3d joint is longer 

 than the 2d or 4th. 



LEPTACINLS Er. 



13S. Li. flavipes. Nigro-piceus nitidus, capite crebre fortiter punc- 

 tato, vitta angusta media lrevi, thorace oblongo-ovali utrinque parce 

 punctato, seriebus dorsali bus 12 — l(i punctatis, elytris parce subtilius 

 punctatis, pedibus flavo-testaceis. Long. *18. 



Middle and "Western States; rare. The dorsal abdominal seg- 

 ments are finely and sparsely puuctulate. 



139. Li. longicollis. Nigro-piceus, vel piceus nitidus, parce setosus, 

 capite confertim punctato, vitta media lsevi, thorace elongato-ovali, pos- 

 tice vix angustato, sat dense subtiliter punctato, vitta dorsali lrevi, ely- 

 tris parce subtiliter punctatis, abdomine punctnlato, ano, auteunarum 

 basi pedibusque testaceis. Long. *13. 



Middle States, usually in ants' nests. The form of the thorax 

 is different in the species of this genus from that observed in 

 Leptolinus : in the latter it is elongate, narrowed behind, and 

 feebly siuuate on the sides, as in ordinary Xantholinus; in Lcp- 

 tacinus it is elongate oval, scarcely narrowed behind, and broadly 

 rounded on the sides. By an error this species has been placed 

 in Leptolinus in the Catalogue. 



LEPTOLINUS Kraatz. 



140. L. parens. Niger, parce setosus, capite eloncato oblongo, tho- 

 raceque parcius haud profunde punctatis, vitta media l»vi male definite, 



elytris piceo-testaceis, parce punctatis, segmentis ventralibuB postioe 



pedibusque piceo-testaceis. Long. *26. 



California, San Jose; not rare. The antennae arc thick, about 



one-fourth longer than the head ; the abdomen is Bparsely puuc- 

 tulate. 



