THE CANADIAN ENTOMOLOGIST. 263 



Valgus, Scriba. 



A very small, brown species, canaiiculatus, Fabr.,(.25 inch), looking 

 something like a diminutive Os?nodenna, is our only representative. The 

 thorax is distinctly channelled, the elytra very much flattened, and with 

 indistinct yellowish or whitish markings across the middle and near the tip. 



The following bibliography includes most of -the more important 

 papers in which the North American Scarabaeidas have been treated in 

 synoptic or more or less monographic form : 



1856. Leconte, J. L. Synopsis of the Melolonthidce of the U. S. Jour. 

 .\cad. Nat. Sci., Phil., Vol, III., Series II., pp. 225-288. 



1856. Leconte. Notes on three genera of Scarabaeidje, found in the 

 U. S. Proc. A. N. S., Phil., Vol. VIII., pp. 19-25. 



1867. Horn, Geo. H. Descriptions of new genera and species of 

 Western Scarabaeidse. Tr. Am. Ent. Soc, Vol. I., pp. 163-169. 



1868. Horn. Geotrupes of Boreal America. Trans. Am. Ent. Soc, 

 Vol. I., pp 313-322. 



1870. Horn. Note on some genera of Coprophagous Scarabaeidse of 

 tlie U. S. Trans, Am. Ent. Soc, Vol. III., pp. 42-57. 



1870, Horn. Description of the species of Aphodius and Dialytes 

 of the U. S. Trans. Am. Ent. Soc, Vol. III., pp. 1 10-134. 



1871. Horn. Synopsis of the Aphodiini of the U. S, Trans. Am. 

 Ent. Soc, Vol. III., pp. 284-297, 



1871. Horn. Descriptions of new Coleoptera of the U, S., with notes 

 on known species. Trans. Am. Ent. Soc, Vol. III., pp. 325-344. 



1874. Leconte. Note on the genus Pleocoma, Lee Trans. Am. Ent. 

 Soc, Vol. v., pp. 81-84. 



1874. Horn. Revision of the species of Trox of the U. S. Trans. 

 Am. Ent. Soc, Vol. V., pp, 1-12, 



1875. Horn. Synonymical notes and descriptions of new species of 

 N. A. Coleoptera. Trans, Am. Ent. Soc, Vol. V., pp. 126-156. 



1876. Horn. Revision of the U. S. species of Ochodteus and other 

 genera of Scarabaeidse. Trans. Am. Ent. Soc, Vol. V., pp. 177-197. 



1878. Horn. Revision of the species of Listrochelus of the U. S, 

 Trans. Am. Ent. Soc, Vol. VII,, pp, 137-148, 



