DESCRIPTIONS OF NEW SPECIES. 121 



verse impression a short distance from the base, as well as by the 

 elytra! stria' being less impressed and less strongly punctured. 



The tooth at the middle of the internal side of the fronl tibise 

 of the male is much less prominent than in X. saperdoidea and 

 rufipes, and the outline from the tooth to the tip much less 

 concave. 



HAPLAXDRIS Lec 



396. H. concolor. Niger, subopacus, elongatus minus convexnB, 



capite thoraceque punctatis, hoc quadrato, latitudine paulo breviore, 

 apice emargiuato, lateribus fere rectis tenuiter marginatia, baai late 

 bisinuata, angulis posticis subrectis ; elytris thorace parum Latioribns, 

 parallelis apice rotundatis, humeris rotundatis, elytris Btriia profundi* 

 punctatis, scutellari e punctis pluribns couiposita ; antennia capita Beaqui 

 longioribus extrorsum niagis incrassatis articulo 3io sequente hand 

 longiore. Long. -34. 



Lake Superior and Canada. Differs from //. femoratus by I be 

 lustre being less opaque, by the thorax being broader, and Dearly 

 as wide as the elytra; by the feet being black, by tin' eyea more 

 strongly transverse, and by the antennae being shorter and more 

 thickened externally. The outer joints of the antenna' are brans- 

 verse, and fully twice as wide as their length. The body beneath 

 is shining and finely but not densely punctured ; the under sur- 

 face of the prothorax is coarsely punctured. 



Haplandrns differs from Xylojnnuz, Uj)is and other allied 

 genera, not only by the characters given in the synoptic table,* 

 but by the presternum being prolonged behind the front coxffi, 

 fitting into the concave mesosternum. The legs are Blender and 

 alike in both sexes; the hind tarsi are short, with the firsl joinl 

 as long as the two following, and the last joint longer than the 

 other united. The epipleune extend almost to the tip in //. 

 femoratus, but are a little shorter in this species, reaching how- 

 ever beyond the last ventral suture. 



I have mentioned, in establishing the genus, that three Bpi 

 were known to me ; but on closer examination, I find that the 

 supposed third species proves to belong to Metaclisa DavaL 



IPIITIIIMl'S Tiiejei. 



397. I. opacus. Niger opacus, capite aoabro, medio rngot 



transverso, latitudine fere duplo breviore, angulis anticis valde rutun- 



* Class. Col. North .America, p. 236 



