NORTH AMERICAN COLEOPTERA. 1(55 



Mr. Samuel Henshaw has kindly assisted in compiling the following 

 bibliography, and also that of the species of Phanaeus. 



CANTHON. 



Hoffmansegg, Wiedem. Zool. Mag. 1817, I, p. 38. 



1. V. nig^ricornis Say (Ateuchus), Jour. Acad. 1823, ser. 1, III, p. 207; ed. 

 Lee. 1SG9, II, p. 133; Lee, Col. Kaiis. 1859, p. 10; Harold, Berl. Ent. Zeit. 1868, 

 XII, p. 23; Horn, Trans. 1870, III, p. 45; C. latimanus Dej., Cut. ed. 3, 1836, p. 

 152 ; C. afeuchoidcs Stu-m, Cat. 1843, p. 104. 



This species was the only one known to Harold with two spurs on the 

 hind tibi?e. Length 6-9 mm. C. W., Mass. to Fla. and westward to 

 Neb., Kans. and Texas. 



2. C ebenus Say (Ateuchus), I. c. p. 208; ed. Lee. II, p. 134; Lee. 1. c.: 

 Harold, 1. c. p. 65; Horn, 1. c. p. 46. 



Dr. Horn has called my attention to a clerical error in his table whereby 

 the primary characters used to separate this and the next species became 

 transposed. They should appear as in the table herewith. In this 

 species and to a less degree in the next, the fimbriae of the side margin 

 of the thorax beneath are continued and diffused inwardly along the 

 hind margin for a short distance, and similar hairs occur upon the inner 

 part of the mesosternal epimera. Length 7—11 mm. Penn., La., Me.. 

 Kans.. Texas, N. M., Ariz. 



3. C depressipeiiuis Lee., 1. c. p. 11 ; Horn, 1. c. 

 Length 7-10 mm. Ga., Fla., Da., Kans. 



4. C praticola Lee., 1. c. p. 10 ; Horn 1. c. p. 45. 



Length 7-9 mm. Neb., Kans., Col., Texas, N. M., Ariz. 



5. C probus Germ. (Ateuchus), Spee. Nov. 1824, p. 98; Harold, 1. e. p. 64; 

 Horn 1. c. p. 45 ; C. abraaus Lee., 1. e. p. 11 ; C minor Sturm, Cat. 1843, p. 104. 



Length 6 mm. Ky., S. C, Ga., Fla. 



6. C. puncticollis Lee., Proc. Acad. 1866, p. 381 : Horn, 1. c. p. 45. 

 Length 6-7 mm. Ariz., L. Cal. 



7. C. L.e€ontei Harold, I. c. p. 68; Horn, 1. c. p. 46. 

 Length 5-6 mm. Texas. 



8. C simplex Lee, Pac. R. R. Rep. 1857, App. I, p. 41 ; Col. Kans. 1859, p. 

 11 : Harold, 1. c. p. 128 , Horn, 1. c. p. 46; C. corvinus Har., 1. c. p. 129. 



Var. simplex Horn, 1. c. — Surface entirely opaque, thorax impunctate. 

 Oreg., Cal. 



Var. corvinus Horn, 1. c.— Surface opaque, thorax punctate. 

 Col., Utah, Ariz., Cal., Oreg. 



Var. militaris Horn, 1. c. — Surface less opaque, thorax less punctured, humeri 

 red. 



Cal. 



