130 Coleopterological Notices, III. 



M. basillaris Say.— Journ. Ac. Phil., Ill, 1823, p. 269. 



From the language employed by Say, it would seem as if this 

 species might be easily recognized if discovered, but I have seen no 

 specimens. 



Say's description states that the head is punctured, the thorax 

 hardly punctured, with three indefinite indented lines on the poste- 

 rior margin ; posterior angles rectangular ; elytra with punctured 

 striae and interstitial lines ; basal oval spot oblique ; body dark 

 chestnut-brown, beneath paler. Length one-fifth of an inch. 



Inhabits Pennsylvania. 



M. tenuis Lee. — N. Spec. Col., 1866, p. 140. — Elongate, moderately con- 

 vex, subparallel, polished, piceous-black above and beneath ; legs pale flavate ; 

 antennae piceous, paler toward base ; elytra each with a very small suffused 

 reddish spot just behind the humerus, which is sometimes wanting; pubes- 

 cence fine, rather short, very sparse and inconspicuous. Head evenly, feebly 

 convex, rather coarsely but sparsely punctate ; eyes rather large and convex, 

 separated by nearly two-thirds more than their width ; antennae rather slen- 

 der, not attenuate toward apex, a little less than one-half as long as the body, 

 the intermediate joints fully twice as long as wide, third distinctly longer 

 than the fourth. Prothorax about one-fourth wider than the head, two-fifths 

 wider than long, the apex three-fourths as wide as the base, subtruncate ; 

 base transverse, very feebly arcuate in the middle ; sides parallel and nearly 

 straight from the base almost to apical two-fifths where they are broadly sub- 

 angulate and rounded ; basal angles right, not at all rounded, not depressed ; 

 disk feebly convex, more strongly so laterally toward apex, rather strongly 

 but very sparsely punctate throughout, not impressed in the middle, the basal 

 foveee rather suffused but large and distinct. Elytra fully four times as long as 

 the prothorax, and, throughout, nearly two-thirds wider, somewhat strongly 

 narrowed behind in apical third ; humeri rather broadly exposed, rounded ; 

 disk with somewhat vague, feebly impressed series of fine, feeble, not very 

 approximate punctures, the intervals having sparsely placed punctures which 

 are almost as large as those of the striae, arranged in rather uneven single 

 series. Under surface very finely, sparsely punctured throughout. Legs as 

 in gracilis. Length 5.2-6.0 mm. ; width 1.7-1.9 mm. 



New York; Ohio; Michigan. 



This distinct species may be readily known by its slender form, 

 small head and prothorax, flavate legs and by its feebly marked 

 elytral series. In general form it approaches procera, but that 

 species has the prosternal process laminate. 



The specimen from New York has the prothorax trapezoidal, 

 with the sides nearly straight and convergent from base to apex, 

 the basal angles being slightly acute and the elytra relatively a 



