AMERICAN COLEOI'TERA. 9 



scarcely evident at the disc and small granules irregularly disposed. 

 The prosternal process is slightly impressed at middle. The hind 

 femora are mutic. Anterior tibiae finely crenulate at base and 

 with a small tooth slightly below the middle. Length .25 — .28 inch ; 

 6 — 7 mm. 



Occurs in New Jersey, Illinois, Georgia, Indian Territory. 



T. papillaris. Say, Journ. Acad. 1813, p. 238; Harris, Trans. Hartf. 8oc. 

 1837, p. 77,- Lee. Proc. Acad. 1854, p. 212; Harold, loc. cit. p. 170. 



Oblong oval. Clypeus broadly arcuate. Sides of thorax feebly 

 arcuate, gradually wider to base, median sulcus feeole but entire. 

 Elytral tubercles feebly elevated, at summits tomentose with black, 

 tubercles distant and small, intervals with smaller tubercles, scarcely 

 evident at the sides, suture slightly elevated. Prosternum at tip 

 slightly elevated. Anterior tibiae unidentate externally \nd very fee- 

 bly serrate. Length .36 — .44 inch; 9 — 10 mm. 



Occurs from Canada to Texas and Kansas. 



T. unistriatus, Beauv. Ins. p. 175, pi. 4b, fig. 5; porcatus, Say, Journ. 

 Acad. 1826, p. 193; Lee. Proc. Acad. 1854, p. 212; Harold, loc. cit. p. 173. 



Elongate ovate. Clypeus rounded. Thorax transversely quadrate, 

 sides feebly arcuate, hind angles rectangular, median sulcus feeble, 

 entire. Lateral margin of elytra entire, tubercles very feebly elevated, 

 elongate and bisjriately squammulato-pilose, intervals with very small 

 pilose spots, and biseriately punctured, punctures large but shallow. 

 Antennee rufous. Anterior tibiae with obtuse marginal tooth and at 

 base feebly serrate. Hind femora not spinulose. Length .40 — .48 

 inch ; 10 — 12 mm. 



The form of this species is very nearly that of the preceding. 



Occurs from Canada to Georgia. 



T. sordidus, Lee. Proc. Acad. 1854, p. 211; Harold, loc. cit. p. 177. 



This species recalls the form and aspect of tuberculat us. The me- 

 dian sulcus of the thorax is feebly interrupted and the costae are sinu- 

 ous, the hind angles are subacute. The elytral sculpture is nearly 

 that of tuherculatus, but the scales at the summits of the tubercles are 

 much paler. The elytral margin, especially at base, is serrulate. The 

 tip of prosternum is an acute tubercle. The hind femora mutic. The 

 anterior tibiae above the marginal tooth finely serrulate. Hind tarsi 

 shorter than the middle tibiae, joints 2, 3, 4 longer than wide. Length 

 .24 — .32 inch; — 8 mm. 



Occurs from Canada to Georgia and Kansas. 



TRANS. AMER. ENT. SOC. (2) JANUAllY, 1874. 



