CERAMBYCID^E 277 



Ophistomis eversa n. sp. Form, coloration and sculpture nearly as in 

 luteicornis, except that the elytra are slightly more abbreviated, dehiscent 

 at apex through a greater extent and without the black suture, the post- 

 basal spots but rarely transversely united and, so far as known, only in 

 the female and the black humeral spot not extending to the scutellum, 

 the pronotal black vittae similar but without more than a trace of 

 the two large approximate occipital black spots of that species, the legs 

 long, very slender, pale throughout, except the black apex of the hind 

 femora also as in luteicornis; head and antennae (d 71 ) nearly similar, 

 except that the sensitive areas of the sides of the outer joints are less 

 extended, the elongate apical and small basal areas of each joint widely 

 separated whereas in luteicornis these areas are larger and very approxi- 

 mate. Length (cf 9 ) 9.0-11.0 mm.; width 2.2-2.8 mm. Illinois. Four 

 examples. 



The male channel-like concavity of the last ventral is as in lutei- 

 cornis. The external sinuous outline of the posterior part of the 

 elytra is more pronounced than in that species, but, having in mind 

 the general mutual resemblance, especially in the peculiar coloration 

 of the legs, it is quite possible that eversa should not have higher 

 rank than a subspecies. In eversa the elytral spots are rounded 

 within and but rarely attain the suture, the latter being almost 

 universally the case in luteicornis; the latter species is represented in 

 my collection by a large series from Pennsylvania. 



Ophistomis carolinae n. sp. General organization and fine close 

 sculpture as in luteicornis, but stouter and with the long slender legs pale 

 throughout; head differing greatly in having the eyes smaller and the 

 very retracted tempora behind them more evident, tumid and less oblique; 

 antennae very slender, piceous-black throughout, the feeble sensitive 

 areas of the outer joints narrow, not occupying more than apical half, the 

 basal areolae of the preceding extremely small, feeble and obsolescent; 

 two black occipital spots of luteicornis well developed; prothorax as in 

 that species, except that the two discal vittae are very fine; elytra broader, 

 less curved or dehiscent apically, pale throughout, except a rounded sub- 

 median discal spot and a feeble cloud at apical fourth, the sutural bead 

 black only basally; male having the apical concavity of the last ventral 

 much shorter, prolonged anteriorly to near the base by a narrower and 

 still feebler evanescent impression. Length (cf) 10.5 mm.; width 2. 6 mm. 

 South Carolina. 



This is without doubt specifically distinct from luteicornis; it 

 differs in coloration of the elytra, legs and antennae, as well as in the 

 stouter form, larger tempora and in the male ventral characters. 

 In luteicornis and eversa the entire under surface is pale, while 

 in Carolina the under surface is wholly deep black, except the 

 abdomen, which is bright red. 



