American Caraboidea 195 



similar; elytra not quite so elongate, with similar punctured striae; 

 base of each elytron similarly declivo-concave, the prominence of 

 the seventh interval at base not quite so marked; anterior male tarsi 

 strongly dilated. Length {d^ 9) 14. 5-14. 9 mm.; width 5.2-5.35 

 mm. Texas impolitus Csy. 



4 — Sides of the prothorax becoming parallel for some distance before 

 the basal angles — about a sixth to eighth of the total length 5 



Sides of the prothorax becoming parallel for only a very short distance 

 before the basal angles; body sometimes very small in size 7 



5 — Sides of the prothorax subobliquely and feebly rounded posteriorly 

 from rather before the middle. Form rather more abbreviated, 

 convex, deep black, wholly polished (cf ), polished, with the elytra 

 feebly alutaceous though scarcely opaque ( 9 ) ; head well developed, 

 nearly two-thirds as wide as the prothorax, the eyes prominent; 

 anterior sulci remote, parallel; mandibles with rather few oblique 

 furrows; palpi dark rufous, paler and obtusely rounded at apex; 

 antennae rather short; prothorax a third or fourth wider than long, 

 the side margins formed chiefly by a moderately thick bead; surface 

 with a few faint transverse rugulae, the anterior incised line obsolete 

 medially; foveae oblong, deeply concave, the inner margin broadly 

 sinuate, the outer the submarginal ridge and the bottom slightly 

 irregular; just inward and near the fovea there is a small irregular 

 impression; elytra one-half to three-fifths longer than wide, a third 

 (9) to two-fifths (cT) wider than the prothorax, rather rapidly 

 rounded behind; striae somewhat fine, equidistant, feebly impressed, 

 with small but distinct punctures, obsolescent behind; scutellar 

 stria wanting; intervals flat (9 ), very feebly convex (cf ); anterior 

 male tarsi rather strongly dilated. Length (cf 9 ) 15. 8-17.0 mm.; 

 width 6.1-6.3 mm. Pennsylvania (Cainphill and Rockville), — 

 Champlain furtivus Lee. 



Sides of the prothorax parallel, evenly and subcircularly rounded from 

 apex to the basal constriction, narrowly reflexed as usual, with 

 slightly thickened edge 6 



6 — Striae deeply impressed, the intervals notably convex and equal in 

 width. Elongate-oval, rather convex, black, the legs rufescent, 

 highly polished throughout in the male; head slightly elongate, 

 three-fifths as wide as the prothorax, the eyes only moderately 

 convex; sulci deep, parallel, the furrows of the mandibles very 

 coarse, becoming fine near the inner edge; antennae longer than in 

 furtivus, as long as the head and prothorax, the latter a third wider 

 than long, with very feeble and widely concave vestiges of anterior 

 and posterior transverse impression, the apical incised line visible 

 only near the sides; transverse rugulae widely separated as usual, 

 rather distinct; foveae oblong, nearly smooth, deeply concave, the 

 outer ridge joining the margin basally, the puncture at the angles 

 deep, elongate; inner adjacent impression very feeble; elytra 

 oblong-oval, nearly three-fourths longer than wide, scarcely a fourth 

 wider than the prothorax, the deep striae strongly punctured, feeble 

 apically; scutellar stria distinct but short; anterior male tarsi 



