162 Coleoptera of the Eastern 



After a most attentive examination, no difference can be perceived 

 between our specimens, and those from the north of Europe. 



2. BemUdium impressum Fabr.— Occurs abundantly about Lake 

 Superior. Dr. Richardson's party also found it in many northern 

 situations. 



3. BemUdium paludosum Fabr.— This species inhabits the 

 banks of streams emptying into Lake Superior. It is to be care- 

 fully distinguished from B. inmquale Say, which it closely resem- 

 bles, and which I obtained near the Rocky mountains. 



4. Silpia Lapponica Fabr.—caudata Say.— This insoct is found 

 in every part of the continent, from the Atlantic to the Pacific, north 

 of 42°. 



■5. Corynetes (Nccrobia) violaceus Fabr.— This necrophage ap- 

 pears to increase in numbers, the farther it is removed from the 

 haunts of man : in the barren regions adjoining the Rocky Moun- 

 tains, where insects reign in almost undisputed mastery, unchecked 

 by scarce a single foe, it may be observed covering the ground un- 

 der any small piece of animal matter, which has been overlooked 

 by the wolves and ravens, or which has defied the power of their 

 teeth and beaks. 



6. Bostriclius typographus and others of the same genus.. 

 Abundant in every place under the bark of pine trees. 



7. Coccinclla 3-fasciata Fabr.— from Lake Superior. 



8. Il/ppodamia 13-punctata Fabr. found every where. 



In these species, as in the preceding, observation fails to detect 

 the slightest difference between the American and European speci- 

 mens. 



Several other examples might be easily adduced, but to some 

 of them it would bo urged, that by some possibility they might 

 have been introduced. In the selections made, all such have been 

 carefully avoided, and those have likewise been excluded, which 

 have not been submitted to a strict comparison with well authenti- 

 cated individuals from the old world. 



Many instances might likewise be obtained from other orders of 

 insects ; as Vanessa Cardui, and some species of Pieria from the 



