CERAMBYCID^E 365 



2 Elytra deep black throughout, excepting a pale marginal area below 

 the humeri, evenly and very moderately though closely punctate 

 throughout, the raised lines very feeble, pruinose, with moderate 

 cinereous hairs, the erect hairs extremely short; apices of the elytra 

 rounded to very feebly obliquely subtruncate; sterna of the hind body 

 and the greater part of the abdomen black; pygidium (9) very 

 convex, tumid and angularly pointed. Length (cf 9 ) 12.0-15.0 mm.; 

 width 2.4-3.1 mm. California quadricallosa Lee. 



Elytra never black 3 



3 Elytra with the inner of the two discal lines obsolete, the outer more 

 than usually accentuated and, basally, including a broad scutellar 

 region which is much more sparsely punctured than the remainder 

 of the surface. Body rather broader than usual, parallel, only 

 moderately convex, fuscous above, the under surface in great part 

 black, the legs pale, except the black tarsi and tibial apices; head 

 black, pale near the eyes, between the upper lobes and at base 

 except medially; antennae short, piceous-black basally, three-fourths 

 as long as the body (cf); prothorax subcylindric, not quite as long 

 as wide, the median line strongly tumid centrally; elytra pale at 

 the sides basally, the pale area prolonged posteriorly in a narrow 

 line along the margin almost to the apex and along the discal ridge 

 nearly to the middle, also along the basal margin including the 

 scutellum, the humeral callus black; punctures coarse and deep, 

 small apically, the apices rounded; pubescence ashy but short and 

 sparse; surface between the punctures dull in lustre, micro-rugulose; 

 male with the last true dorsal segment as wide as long, only moder- 

 ately convex and with the parallel subbasal ridges widely distant, 

 obtuse and feeble. Length (c/ 1 ) 13.6 mm.; width 3.0 mm. Penn- 

 sylvania. [Louisiana Lee.] schaumi Lee. 



Elytra with the inner of the two discal lines feeble but evident, the outer 

 less prominent than in schaumi, the punctures basally toward the 

 scutellum not sparser than elsewhere 4 



4 Form more slender than in schaumi, uniform pale brown throughout 

 above, the head nearly as in schaumi, the elytra each with a small 

 black discal spot at apex; under surface and legs nearly similar; 

 antennae even shorter, similar in coloration; prothorax nearly 

 similar but with the sides slightly swollen medially and the pubes- 

 cence coarser and denser; elytra very coarsely punctate (cf ), or 

 moderately but more closely (9 ), the humeral callus with a minute 

 black spot; pubescence abundant, giving a strongly pruinose effect, 

 the apices strongly rounded to feebly subtruncate; last dorsal segment 

 (cf ) more narrowed and more rounded at apex than in schaumi and 

 with the subbasal prominences obsolescent; concavity of the fifth 

 ventral shallower and more pubescent; pygidium (9) less convex 

 than in quadricallosa and with the apex not acutely angulate but 

 obtusely lobiform. Length (cT 9 ) 10.5-13.0 mm.; width 2.2-2.8 

 mm. Missouri (near St. Louis) pruinosa n. sp. 



Form still more slender and elongate, pale ochreo-ferruginous throughout, 

 the head without black maculation, the black thoracic spots small, 

 the elytra with the humeral callus alone black, the under surface 



