914 



FAMILY U — SCAB A RiEIMG . 



gg. Thorax finely rugose without distinct granules; pygidium and 

 last ventral smooth. 1725. chalcites. 



a a. Sides of thorax beneath with an entire transverse carina; size small, 

 4-6 mm. 



h. Clypeus with two teeth ; bright bronze or greenish. 1726. vieidis. 

 hh. Clypeus with four distinct teeth ; brown, bronzed, shining ; eyes 

 larger. 1727. pekplextts. 



1723 (5425). Canthon nigkicoknis Say, Journ. Phil. Acad. Nat. Sci., Ill, 



1S23, 207; ibid. II, 133. 

 Broadly oval. Black, subopaque, sparsely and finely granulate ; head 

 and thorax often with a purplish reflection. Clypeus six-toothed, the two 

 front ones more prominent, flattened and slightly recurved, the others 

 smaller. Elytra with subobsolete stria?. Length 6-9 mm. 



Two specimens from near North Judson, Starke County. 

 July 13. 



C. ebenus Say, deep black, length 7-10 mm., is known from 

 Maine and Pennsylvania to Kansas and Texas; C. depressipennis 

 Lec., greenish-black, length 7-10 mm., has been recorded from Cin- 

 cinnati; C. pr obits Germ., dull black, length 6 mm., occurs in Ken- 

 tucky and southward ; C. vigilans Lec, length 17-22 mm., occurs 

 from Pennsylvania and Ohio westward. 



1724 (5435). Canthon l^vis Drury, Exot. Ins., I, 1770, 79. 



Broadly oval. . Usually dull black, tinged with cupreous ; sometimes 

 (south and west) varying to deep blue and bright green. Readily known 

 by its larger size and distinct and rather dense granulations of thorax and 

 elytra. The teeth of clypeus are blunt and but little prominent. Length 

 11-19 mm. (Fig. 360.) 



Throughout the State ; common. April 23-September 29. This 

 is our most abundant and best known "tumble-bug." Prom mid- 

 April until after heavy frosts it can be found along every roadside 

 or pathway where horses or cows have dropped their dung. 



1725 (5436). Canthon chalcites Hald., Proc. Phil. Acad. Nat. Sci., I, 



1843, 304. 



Form somewhat more robust, shorter and broader than Jmvis. Upper 

 surface distinctly and uniformly bronzed ; under surface and legs black, 

 moderately shining. Thorax finely and intricately rugose, not granulate. 

 Elytra granulate, but much more sparsely than in Icevis. Male with front 

 tibiae much longer and more curved and middle tibiae distinctly longer than 

 in female. Length 13-20 mm. 



Vigo, Knox and Posey counties; frequent. April 23-Septem- 

 ber 2. 



1726 (5438). - Canthon vieidis Beauv., Ins. Afr. et Amer., 1805, 23. 

 Broadly oval or subrotund. Bronzed, strongly shining. Thorax very 



finely punctured. Elytra smooth or nearly so, obsoletely striate. Hind 

 tibiae slightly curved. Length 4-5 mm. 



Lawrence and Crawford counties; scarce. May 11-July 1. Oc- 



