AMERICAN COLEOPTERA. 319 



Two species occur in our fauna. 

 Tibiee not prolonged at tip, the middle not sinuate externally adnsttis. 



Tibiae especially the anterior with the outer apical angle prolonged, the middle 

 moderately deeply sinuate before the apex Ziiniuerinaniii. 



C adtistus Erichs. — Broadly oval, convex, opaque, pubescent, ferruginous 

 elytra variable from entirely ferruginous to entirely black. Head sparsely 

 punctured, front sinuously transversely impressed. Thorax twice as wide as 

 long, narrower in front, apex deeply emarginate, base truQcate, hind angles 

 obtusely rectangular or rounded, sides arcuate, margin narrow with fine fimbriae, 

 surface rather coarsely and closely punctate. Elytra as broad as long, slightly 

 narrower posteriorly, margin finely fimbriate, apex obtusely truncate, disc with 

 fine elongate punctures arranged in quite regular series. Body beneath sparsely 

 punctate. Length .12— .16 inch; 3—4 mm. (PI. Ill, fig. 18, d, e, f.) 



The tibiae are all gradually broader to apex, the outer apical angle 

 not prolonged. The variation in color of the elytra is from ferrugi- 

 nous to black by the sides becoming piceous, this color extends so 

 that merely a sutural triangle is ferruginous, finally the entire color of 

 the elytra is black, forming the variety hicolor of the Check List. 



Occurs in Virginia, Georgia and Missouri, not common. 



C. Zimmermanni n. sp. — Oval, convex, subopaque, pubescent, elytra 

 piceous. Plead sparsely granular, front transversely impressed. Thorax twice 

 as wide as long, narrower in front, apex deeply emarginate, base truncate, sides 

 arcuate, hind angles obtusely rounded, surface moderately closely punctured, 

 punctures submuricate, margin finely fimbriate. Elytra as wide as long, arcu- 

 ately narrowed to tip, convex, disc faintly substriate, intervals finely submuri- 

 cately punctured. Body beneath moderately closely punctate, the prosternum 

 smooth. Length .18 inch; 4.5 mm. (PI. Ill, fig. 18, a, b, c.) 



Anterior tibiae feebly sinuate on the outer side the apical angle pro- 

 longed into a long acute tooth, middle tibiae sinuate externally the apical 

 angle moderately prolonged, posterior tibiae feebly sinuate the apical 

 angle more prolonged than the middle but much less than in the anterior. 



This species of which I have seen but one specimen resembles the 

 variety hicolor of the preceding species. It is a little less broad and 

 differs in sculpture also. The variation in the form of the tibiae does 

 not seem to me to be of generic value, as similar characters are already 

 f3reshadowed in Meligetlies and Psllopi/ga. 



One specimen, South Carolina, collected by the late Dr. Chas. 

 Zimmermaun. 



CYBOCEPHALINI. 



Maxillse with one lobe. Tarsi four-jointed. Body retractile, mandi- 

 bles in repose resting against the metasteruum. Thorax margined at 

 base, covering the base of the elytra. 



The views of Duval in separating this genus from the Ci/chramim, 

 seem to me correct and worthy of adoption. 



