H. C. FALL 463 



autolycus, to the entirely dull black carbonari us. That the ex- 

 tremes are specifically distinct I do not for a moment doul)t, l)ut 

 just what the intermediate relationships are is a problem for the 

 future student. No examples oi janus show a trace of the sub- 

 sutural vitta of nigricornis, but several have the epipleural lobe 

 dark rufous or rufescent, and in one example this color continues 

 obscurely along the marginal interspace to the suture. It seems 

 quite probable that some of Say's specimens of nigricornis lacking 

 the rufous elytral margin were of the present form. 

 144. Pachybrachys picturatus Germar 



Pale whitish yellow, lustre dull, prothorax with a narrow l)lack 

 M, elytra with sutural bead and a single narrow median vitta 

 attaining the convexity, and the tip of the shoulder knob, black; 

 front Avithout ocular lines; front claws of male not enlarged. Ave. 

 length 3.6 mm. North Carolina. 



Head just perceptibly wider than the thoracic apex, finely, not closely punc- 

 tate, markings black and sharply defined, front predominantly pale. Eyes 

 separated in the male by fully twice the length of the basal antennal joint, the 

 distance slightly greater than the vertical length of the eye, in the female by 

 nearlj' three times the length of the basal antennal joint. Antennae of moder- 

 ate length, black, yellow toward the base, first two joints blackish above, tenth 

 joint nearly three times as long as wide {&). 



Prothorax moderately transverse, sides distinctly convergent and almost 

 straight from near the base, punctuation fine and sparse, M narrow but com- 

 plete. Scutellum yellow with black tip. 



Elytral punctures more or less confused in a rather large baso-sutural area, 

 the striae evident laterally and behind the middle, lightly or scarcely impresseil, 

 eighth stria scarcely disturbed behind the humems, marginal interspace wide 

 with a few punctures near the base; shield indistinct. 



Pygidium pale yellow with the basal margin blackish; body beneath yellow 

 and black; legs entirely i)ale. 



Length 3.4 to 3.8 mm.; width 1.9 to 2.15 mm. 



Distribution. — North Carolina: (J. B. Smith — Nat. Mus. Coll.), (Am. Ent. 

 Soc. Coll.), (LengColl.); ^^'ilmington (Wenzel). 



Whether this is the true picturatus of Germar or not I do not 

 know. The single .specimen in the Nat. Mus. Coll. bears this 

 name, and the one in the Leng Coll. appears to be doubtfully so 

 placed. The original description is short, but fits very well 

 except that there are said to be six black spots on the prothorax. 

 It might easily happen that the thoracic ]\I, which is entire in the 

 few specimens at hand, is broken up into six spots in the type, 

 and as the original description does not at all apply to any other 



TR.\NS. AM. ENT. .SOC, XLI. 



