60 MATERIALS TOWARDS A HISTORY 



221. P. liturata, Kirby. Northern Zoology, p. 178. 



222. P. THORACICA. 



Brownish-black, front and pronotum ochraceous, elytra subquadrato. 5"' long; 2 wide. Inhabits Penna. 

 Rhagium thoracicum, Meh. Cat., No. 778. Pachyta sulcicollis? Dej. Cat., p. 381. 



Head brownish-black, impressed between the antenna;; front, orbits, and labium ochraceous: prothorax yel- 

 low, tomentose above, transverse, pleura black; a wide, impressed, mesial line, with a tubercle each side of it, 

 and another at the anterior angles; anterior margin and posterior one, near the scutel, black; scutel triangular, 

 smooth : elytra parallel, obtusely conjointly rounded at tip, finely hirsute, and scabrous with numerous impressed, 

 dilated punctures: beneath piceous, a pale-yellow, evanescent spot on the outer margin of the penultimate seg- 

 ment of the venter; epimera and episterna rufous; basal half of the tibiae flavous. 



223. P. SUBLINEATA. 



Black, elytra and feet fulvous, extremity of the femora black. 4 — 41'" long; lj wide. Pennsylvania. 

 Lake Superior. 



Head minutely punctured, a fine, impressed line on the vertex, and between the antennae; antennoc dark- 

 reddish-brown: pronotum minutely punctured except along the medial line; a prominent tubercle in the pos- 

 terior angles; scutel black, regularly triangular: elytra subparallel, minutely punctate, brownish fulvous, 

 clothed with prostrate, fulvous hair; a rather prominent tubercle at the basal angles; apex truncate; an obscure, 

 common, sutural band, and a second submarginal one. 



224. P. RUFULA. 



Black ; antenna', prosternum, feet, and elytra dull rufous. 4|'" long ; 1 1 wide. Eagle Harbour. Dr. Le Conte. 



Head and pronotum scabrous with confluent, impressed, punctures: prothorax armed with a slightly elevated 

 tubercle; dorsal line obsolete; surface elevated each side posteriorly: elytra parallel, conjointly rounded at the 

 apex, thickly covered with impressed, dilated, piliferous punctures: feet with piliferous punctures; dull rufous, 

 tarsi and apex of the femora blackish. 



225. P. cyanipennis, Say. Jouit). Acad. Nat. Sc, iii. 423. P. ione, Newman. 

 Inhabits Arkansas, Say; Massachusetts, Harris's Catalogue; and I have an individual 



from Kentucky. 



226. P. leonardii, Harris. 



Closely allied to the preceding, if not the maleof that species. The antenna) are paler, 

 the labrum and clypeus yellow, the elytra much narrower, and transversely and not 

 obliquely truncate, as in cyanipennis. Inhabits Massachusetts and Pennsylvania. Very 

 active; found upon Sambucus, in June. 



227. P. D1SCOIDEA. 



Slender, black; elytra with the base, suture, and margins, dull rufous. 4'" long; 1^ wide. 



P. discoidea, Dej. Cat. Cab. Le Conte. 



Head and pronotum with numerous, impressed punctures; posterior angles of the latter rising in a prominent 

 tubercle: elytra margined with rufous, which is widest at base and narrowest along the suture; apex minutely 

 and separately emarginate. 



228. P. CHALYB/EA. 



Black, elytra deep steel blue, antennae and feet rufous. 2A — 3'" long; J — 1 wide. Pennsylvania. 



Leptura chalibaea, Knock. Mels. Cat., No. 840. 



Head minutely punctured, frontal line- impressed: pronotum minutely punctured, medial line smooth, with a 

 wide, shallow impression behind the middle; scutel black : elytra finely punctured, very slightly contracted in 

 the middle; of a deep, shining, steel blue colour, tip separately rounded, leaving a sutural emargination. 



