AMERICAN COLEOPTERA. 45 



Surface npaque, gramilatp : 



Eyes larger, antcnnie ferruginous vigilans, Lee. 



Eyes smaller, antennse dark brown : 



Thorax finely rugose and punctured chalcites, Ilald. 



Thorax distinctly granulate laevis, Drury. 



C. indigaceus, Lcc. Proc. Acad. 1866, p. 280. 



Easily known by its deep blue color, smooth surface, and by having 

 two spurs to the hind tibia3. Length .40 inch; 10 luni. 

 Fort Whipple, Arizona. 



C. mgricornis, Say, (Ateuchus) Journ. Acad. Ill, p. 207; Lee. (Canikon) Col. 

 Kansas, j). 10, 



Body black opaque, sparsely granulate. Clypeus 6-dentate. Hind 

 tibia) with two spurs. Length .25 — ..^5 inch ; 6 — 9 mm. 

 Texas, Kansas, Middle States and Georgia. 



C. praticola, Lee. Col. Kansas, p. 10. 



Similar in form and sculpture to the preceding, but more elongate 

 and less narrow behind. Diflfers especially in the hind femora being 

 coarsely punctured and setigerous. Length .25 — .38 inch ; 6.5 — 

 9.5 mm. 



Kansas. 

 C. puncticoUis, Lee. Proc. Acad. 1866, p. 381. 



Smaller, smoother and less opaque than p)-aficoIa,liec. The thorax 

 is coarsely and sparsely punctured. Hind femora punctured and seti- 

 gerous. Length .24 — .28 inch ; 6 — 7 mm. 



Cape St. Lucas, Lower California. 



C. cyanellus, Lee. Col. Kansas, p. 11 ; speciosus Harold, Berl. Ent. Zeitschrift, 

 1868, p. 41. 



Greenish blue, smooth, shining. Ilind tibiae arcuate. Clypeus four 

 toothed, the two middle teeth being very slender, the lateral teeth 

 broad and triangular. Length .33 — .37 inch; 8.5 — 9.5 mm. 



Mexico (Harold), Texas (Ulke). 



C. probns, Germar, {Ateuchus) Spec. Nov. p. 98 j abrasus Lee. {Canthon) Col. 

 Kansas p. 11. 



Hind femora smooth, impunctured, tibiae straight. Clypeus six- 

 dentate, teeth acute, incisure between the hinder tooth and the one 

 immediately in front of it deep. Surface nearly smooth. Length .23 

 — .25 inch; 6 — G.5 mm. 



I have n ) hesitation in uniting the species of Leconte to that of 

 Germar, and although some slight differences e.vist between the de- 

 scription and Leconte's unique, it must be remembered that both spe- 

 cies have been described from single specimens. 



Georgia. 



