ROLAND HAYWARD. 101 



74. R. ilorsale Say. — Form broad, dilated, slightly convex. Head and tho- 

 rax bright viridi-teneous. sometimes more or less coppery, shining; elytra pale 

 testaceous, with moderately well-defined fuscous markings, these consisting of a 

 small spot on the third interval about one-third from base, a sinuous transverse 

 band about or slightly behind the middle, extending nearly to the margin, and 

 another shorter one between this and the apex. Head shining, not alutaceous, 

 as wide as the thorax at apex ; jialpi testaceous, slightly darker towards the tip ; 

 antennfe about one-half the length of the body, fuscous, the basal joints testa- 

 ceous. Prothorax subquadrate, about one-half wider than long, as wide at base 

 as apex, scarcely rugose at base ; median line fine, abbreviated before and behind • 

 anterior transverse impression feeble, the posterior more marked ; basal impres- 

 sions broad, deep, bistriate ; base slightly obliquely truncate each side; sides with 

 the margin narrowly reflexed, moderately strongly arcuate in front, distinctly 

 sinuate behind ; hind angles rectangular, carinate. Elytra more than one-half 

 wider than the thorax, oblong-oval, moderately finely striate; strise entire, not 

 dilated at base, finely punctate to behind the middle, the fifth, or more rarely the 

 seventh, slightly grooved at tip ; intervals nearly flat, the third with the first 

 dorsal puncture about one-third from base, the second about one-third from apex. 

 Beneath black, shining. Legs testaceous. Length .20-. 23 inch ; 5-5.75 mm. 



It approaches very closely the next species, but the head and tho- 

 rax are not alutaceous, and the elytra are paler with the markings 

 fuscous and without postscutellar depression, while the strise are finer 

 and not dilated at base, and the intervals nearly flat. It has been 

 confused in collections with postfasciatum. 



It occurs from Missouri and Nebraska westward to the Rocky 

 Mountains, and northward to Manitoba and Montana. I have seen 

 one specimen from as far east as southern Illinois. 



75. B. postfasciatum Hamilton. — Closely allied to the preceding. Head 

 and thorax more coppery bronze, alutaceous, the latter with the median line 

 deeper, subentire, the transverse impressions more marked, and the base more 

 coarsely rugose. Elytra more deeply striate, with a transverse depression behind 

 the scutellum; strife dilated at base and more deeply and coarsely punctate; 

 markings broader and nearly black ; otherwise as in dorsale. Length .20 .24 

 inch ; 5-6 mm. 



It seems to bear nearly the same relation to dorsale that variolosum 

 does to umhratum. 



It was described by Hamilton from Allegheny, Pa. I have seen 

 specimens from Massachusetts (Chicopee, Springfield), Pennsylvania, 

 Ohio, Illinois, Iowa, Kansas and Texas. 



76. B. variolosum Mots.— Form rather slender, elongate, slightly convex. 

 Head and thorax teneous, often with greenish reflections, especially at the sides; 

 elytra testaceous, with the following well defined nearly black markings : a small 

 spot on the third interval about one-third from base, a sinuous band about or 

 slightly behind the middle extending transversely from the margin to the suture, 

 and another between this and the apex, connected along the suture with the latter 



TRANS. AM. ENT. SOC. XXIV. MARCH, 1897. 



