AMERICAN rOLEOPTERA. 11 



dorsal sulcus very feebly impressed. Elytra punctato-striate, intervals 

 leebly convex and with very feeble tubercles tipped with rufous scales 

 in a double series. Prosternal process rarely in the form of an acute 

 tubercle, usually luii^itudiually cariniform. Hind tarsi moderately 

 long, the joints 2, '6, 4 longer than wide. Lateral tooth of anterior 

 tibiae very small, above which the tibiae are simple. Length .24 — .26 

 inch ; 6 — 6.5 mm. 



This species occurs from Canada to Louisiana. 



T. fascifer, Lee. Proc. Acad. 1854, p. 213. 



This species closely resembles the preceding. The thoracic sculp- 

 ture is still more obliterated. The elytral tubercles are obliterated 

 and their places supplied by small, round, very regularly placed 

 patches of rufous scales. The hind tarsi are short. The anterior 

 tibiae bidenticulate externally and serrulate at base. Length .26 inch ; 

 6.5 mm. 



The patches of scales are of equal size on all the intervals. 



Occurs in California. 



T. scatoer, Linn, Syst. Nat. edit, xii., p. 573; Harold, loc. oit. p. 1S3; 

 variohUus, Mels. Proc. Acad. 1846, p. 138; Lee. Proc. Acad. 1854, p. 213. 



Closely allied to aequalis. The thorax is similar in form and sculp- 

 ture. The elytra have the intervals slightly alternating, the tubercles 

 very feeble and tipped with rufous scales biseriately arranged, the 

 tubercles on the more convex intervals being more elongate and con- 

 spicuous than those of the alternate intervals. The hind tarsi are 

 elongate. The anterior tibiae bidenticulate near the tip on the outer 

 margin and serrulate near the base. Length .20 — .28 inch ; 5 — 7 

 mm. 



This species occurs in every quarter of the globe. In our own 

 fauna it occurs from Canada to Texas. The European synonymy has 

 been omitted for obvious reasons. 



T. atrox, Lee, Proc. Acad. 1854, p. 214. 



This species recalls in its outline capillaris, but is much less convex. 

 Clypeus rounded. Thorax similar in form to um'striatus, sides moder- 

 ately arcuate in front, slightly sinuate at base, hind angles acute, sur- 

 face sparsely punctured, discal channel entirely obliterated excepting 

 a slight impression in front of the scutellum. The elytra have broad 

 shallow striae, the edges of which are slightly raised and with trans- 

 verse punctures not closely placed; the intervals are feebly convex 

 and with a row of small punctures moderately closely placed, each 

 bearing a short erect brownish hair. Hind tarsi elongate. Anterior 



