Third joint of antennae very little longer than fourth; elytra unicolorous, 

 black, varying to rufotestaceous ; apex obliquely emarginate and 



subbidentate cylindricoUis. 



Elytra at apex obtusely rounded; disc not costate and scarcely pubescent. 



obtnsus. 

 T. Schaumii Lee, J. A. P. 1S50, p. 320; Proc. Ac. Phil. 1862, p. 41- 



Length 19 mm. = .76 inch. cP; 25 mm. = i.oo inch. $. Habiiat.—0\\io, 

 111., Vt., Can. 

 Entirely black, finely pubescent, except the central part of 

 femora yellow. The elytra finely costate, and the black color shad- 

 ing into blue fi-om the dense pubescence; \diV. croceus. Differs % 

 and 9 in the color of the body, which is yellow, except the tibiae, 

 tarsi and antennae, from second joint outwards, which are black as 

 usual. I have this form from Vermont (Mr. Roberts) and northern 

 Illinois, where Mr. George P. Welles has taken it abundantly with 

 the black Schatwiii. Dr. LeConte mentions (Proc. Ac. Phil. 1862) 

 that the male is frequently yellow, but the yellow female appears to 

 have been unknown to him. 



T. cinnamopterus Rand., Bost. Jour. II, 1838, p. 45; a;scunw?\6.., Trans. Am. 

 Phil. 1847, ^> P- 59- 

 Length 10—13 mm. = .40— .50 inch. Hab.—^. C, 111.. Mass., Pa. 



Uniform pale fulvous in color, thorax darker, eyes large and 

 black. Elytra silky pubescent. The % is smaller, and the antennae 

 are slightly longer than in 9 . 



T. vestitus Hald., 1. c. 



Length 10—15 mm. = .40^— .60 inch. Hab.—Ore^., Cal., Vane. 



This species varies considerably in color, being rufo-testaceous, 

 with legs of the same color, or with the legs darker; or it may be 

 entirely black. The legs appear to be always black in black speci- 

 mens, and the head and prothorax are usually black. The elytra 

 are vaguely costate, and the pubescence, especially between the 

 cost^e, is arranged transversely. 



Var. ater: I suggest the use of this name to distinguish the form, 

 which is entirely black. 

 T. nubifer Lee, Proc. Ac. Phil. 1859, p. 80. 



Length 17.5 mm. = .70 inch. Hub. — Tejon, Cal. 



This species I have not seen, and am indebted to Dr. Horn and to 

 Dr.. LeConte' s description for the characters used in the table. The 

 original description is: " Head black, punctate; thorax black, finely 

 punctate, constricted before and behind with a large, obtuse, lateral 

 tubercle; elytra with prominent humeri, gradually narrowed behind; 

 apex obliquely truncate inward; densely, but finely punctate and 

 rugose, blackish, with basal, lateral and apical margin rufo-piceous; 

 beneath black; abdomen, antennae, palpi and legs rufo-piceous." 



