Notes on the Distribution of Insects^ 8fC. 45 



North American forms, while the extensive European apterous 

 genus Dorcadion is perhaps entirely unknown here. Amongst 

 the genera common to North and South America may he men- 

 tioned Mallodon, Callichroma. Eburia, Amniscus, Onciderus 

 Hi^ypopsis, Amphionycha and Distenia — Haldeman, 

 . The genera collected in Western Canada are Orihosoma^ Tra- 

 ffosoma, Criocephalus, Arhopalus^ Callidivm, Pliymatodps^ Phy- 

 socnemum, Clytus, JSuderces, Helliomanes, Grap>hisvrvs, Mono- 

 hammus, Plectrodera, Tetraopes Compsid^ea, Sapcrda, Oherea^ 

 DesTnocerus^ Rhagmm, Toxotus, Evod'inus^ Acmaeops^ Stranya- 

 lia, Leptu7'a, Triyonarthris. 



Two of the species mentioned by Haldeman, viz. : — C. sanyui- 

 neu77i, and M. sutor are European species, but there is a doubt re- 

 gardino; their occurrence in America. M. resufor Kirb. and M. 

 scutdlum Say, are synonymous. Kirby describes M. resuior as 

 resembling the European M. autor, " in many particulars," he 

 says, " that it is not without considerable hesitation I describe it 

 as distinct; it exhibits, however, some characters that seem to in- 

 dicate more than a casual variety, produced by a difference of 

 climate." He also says, that vendor is intermediate between M. 

 sutor and M. sartor. 



Calosoma scrutator occurs on the western frontier of Texas, 

 and in Canada ; it has been taken on the northern shores of 

 Lake Ontario. Chlcenius seriseus occurs at Tampico, and is com- 

 mon throughout the Canadas. StaphyUnus villosus occurs in 

 Mexico and Cuba, and is also common throughout the United 

 States and Canada. Necrophorus obscurvs found in the valley of 

 the Great Salt Lake of Utah, occurs in Canada. Aphodius 

 strigatus found at Jalapa, occurs as far north as Lake Superior ; 

 also the European ApKodhis fimitarius has its representative in 

 America, and is found on the shores of Lake Superior. Hister 

 bimaculatus is naturalized, but of rare occurrence in this vicinifv. 

 Byrrhus varius inhabits France and England ; in North America 

 it is common. Byr. clydophorus occurs in Eastern Canada. 

 PeUdnota tripunctata occurs at Fort Gates, Texas; its range 

 has been traced northward to Niagara Falls, where it is found 

 on grajDe-vines Areoda Janigera occurs at Santa Fe ; is rare- 

 ly found in Canada West, and probably its northern range ter- 

 minates about the 44th parallel. Clytus flexuosus occurs at Fort 

 Gates ; its northern limit is confined to a species of Locust 

 tree, on which it is a parasite in its larva stage. Mr. Harris 



