1G4 GEO. H. HORN, M. 1). 



The majority of specimens from Vancouver and the west coast 

 have two frontal punctures, while those from the eastern region are 

 deprived of them. This is by no means constant, however, in either 

 case, and as there are no other characters 1 keep them together. 



Occurs from New Hampshire to Vancouver, and as far south as 

 northern Georgia. It is also widely distributed in Europe, but I have 

 not seen any from Alaska. 



Q. liyperboreiis Erichs. Staphyl. p. 547. — Head orbicular, strongly con- 

 stricted posteriorly, smooth shining, a small puncture at the base of the 

 antennae, one at the middle of the upper margin of the ej'e two on the vertex 

 one of which is at the edge of the eye, one immediately behind the eye on 

 its posterior edge. Labrum truncate. Eyes large prominent, regularly oval, 

 longitudinal. Infra-orbital ridge nearly obliterated. Antennae slender, slightly 

 thicker externally, passing the middle of the thorax, second joint equal to 

 the third, last joint obliquely truncate. Thorax as wide as long, narrowed in 

 front, sides feebly base more broadly arcuate with punctures as in molochinus. 

 Scutellum punctulate. Elytra as wide as the thorax, conjointly as wide as 

 long, surface moderately densely and feebly punctured and clothed with brown- 

 ish pubescence. Abdomen a little more coarsely and less densely punctured 

 than the elytra, beneath similarly punctured. Femora punctulate, tibiae spinu- 

 lose. Length .20 — .24 inch; 5 — 6 mm. 



The sixth ventral of the male is triangularly emarginate. The 

 anterior tarsi strongly dilated in the male, very feebly in the female. 



The color is piceous black, legs more or less testaceous, elytra 

 brownish with an aeneous tinge, abdomen iridescent. 



The post coxal process is short and translucent. 



Occurs from Maine to Vancouver and northward, but very little to 

 the south of this line. 



Q. bruniiipeiinis Mann. Bull. Mosc. 1843, ii, p. 232; cenescens Makl. 

 Bull. Mdsc. 1852, ii, p. 315; 1853, iii, p. 190. — This species resembles hyperhoreus 

 and differs in the following characters ; Front with two impressed punctures. 

 Eyes large but not very prominent. Infra-orbital ridge well marked. Scu- 

 tellum smooth. Elytra more coarsely and less densely punctured than hyper- 

 boreus. Abdomen much more finely and sparsely punctured than the elytra, 

 beneath a little more coarsely than above. Length .24 — .28 inch ; 6 — 7 mm. 



Sexual characters as in Tiyperhoreus. 



Color piceous or black with faint aeneous tinge, legs piceous or 

 somewhat paler. Elytra often brownish, segments of abdomen mar- 

 gined with paler at the tip. 



Post coxal process short, transparent. 



Specimens rarely occur without frontal punctures. 



This species could only be confused with hyperhoreus, but its smaller 

 eyes, less punctured elytra, distinct infra-orbital ridge and smooth 

 scutellum will at once distinguish it. 



