CERAMBYCID^E 367 



three joints black, the others abruptly black at apex; prothorax 

 cylindric, as long as wide (cf) or slightly transverse (9); elytra 

 barely three times as long as the head and prothorax together, with 

 series of coarse punctures, confused and a little smaller apically, the 

 apices rectilinearly and somewhat obliquely truncate, the inner, 

 but only seldom the outer, angle, minutely denticulate; pygidium 

 ( 9 ) broadly convex and swollen discally but only very obtusely 

 prominent behind. Length (cf 9) 9.5-11.8 mm.; width 1.8-2.3 mm. 

 New York to District of Columbia, [c? mandarina Fabr., 9 



amabilis Hald.j tripunctata Swed. 



A Outline, coloration, sculpture and vestiture nearly similar, the 

 body not quite so elongate and the punctures very slightly less 

 coarse, the black spot of the fifth ventral (cT) virtually wanting, 

 the fourth and fifth ( 9 ) pale at the sides and apex, the pale color 

 extending to abdominal base at the sides; head pale throughout; 

 antennae differing conspicuously, not deep black basally and 

 generally scarcely darker, with the other joints infuscate; gradually 

 pale toward their bases; pygidium (9) more pointed behind. 

 Length (cf 9 ) 10.0-11.5 mm.; width 2.0-2.2 mm. Indiana, Illi- 

 nois and Mississippi (Vicksburg) intermedia n. subsp. 



B Outline nearly as in intermedia: coloration, sculpture and vestiture 

 almost identical, except that the head is deep black, the black 

 area sharply and abruptly limited on the occiput by a broadly 

 and posteriorly angulate line, the angle attaining the prothorax, 

 the black discal spots of the latter unusually small; antennae (9 ) 

 not quite as long as the body, slender, filiform, extremely pale 

 in color, the first two joints alone darker and blackish, the re- 

 maining joints abruptly black at their apices as in tripunctata. 

 Length (9) 10.7 mm.; width 2.1 mm. North Carolina (Ashe- 



ville) appalachiana n. subsp. 



Form, sculpture and vestiture nearly as in tripunctata but much more 

 elongate, the coloration differing decidedly; head deep black, the 

 black limited on the occiput by a straight (cf) or posteriorly angulate 

 (9 ), sharply marked line; prothorax nearly as in tripunctata, except 

 that the basal spot is not rounded or transversely oval but in the 

 form of a short narrow vitta; elytra (cf ) four times as long as the 

 head and prothorax combined, infuscate throughout except basally, 

 the sutural bead and the sides, except the lower edge basally, blacker, 

 the scutellum differing greatly in being very pale like the surrounding 

 surface, and not black as it is in tripunctata and related forms; legs 

 pale; under surface (d 71 ) wholly pale, excepting a rounded spot just 

 outside the anterior coxae, all the metasternum and side-pieces 

 excepting a large transverse anterior median area, narrow sublateral 

 spots on the second and third and the entire fifth segment except 

 at base, which are deep black, the black areas sharply defined, or 

 ( 9 ) entirely pale, except that the black of the male is more extended, 

 forming two subapical spots on the first segment, occupying all the 

 second and third except at the sides and the fifth except at the sides 

 and base; pygidium (9) but feebly protuberant medially; antennae 

 (a 71 ) five-sixths, or ( 9 ) much shorter and less than four-fifths, as 



