OF WASHINGTON. 193 
New York to Canada and Michigan. Others, on the contrary, 
seem to be entirely unable to extend their range from the spot 
where they had established themselves in this country c. g., 
Malachius czneus, which, since many years, is found in the 
vicinity of Boston and nowhere else. Nacerdes meJanura is now 
one of the commonest species in our eastern cities, and lives un- 
der conditions apparently most favorable for its further spread, 
viz., in the decaying wood of stables and outhouses. Neverthe- 
less it is unknown west of the Alleghanies. The well-known 
Anthrenus scrophularicE is common on the Pacific coast, where 
it has probably been introduced from Asia ; but no complaint has 
ever been made of injuries committed by the beetle in California 
and Oregon. It was recently reintroduced from Europe into the 
State of New York or Massachusetts, and proceeded at once to 
destroy, at an alarming rate, the carpets in our houses and stores. 
A very common European dung-beetle, Aphodius lividus, has 
long since found its way to the West Indies, thence to South 
America, and also to our Southern States. Instead of continuing 
its spread northward along the Atlantic coast, it went westward 
through the Gulf States to Texas and Arizona and then north- 
ward through California to Oregon. 
There has never been any serious attempt made properly to col- 
lect and record the merely imported species. In fact, such collec- 
tion could only be made by the co-operation of many Coleopte- 
rists who live in our great seaports and who would be willing and 
able to spend much time on this work. Mr. Lugger is, so far as 
I know, the only entomologist who has paid some attention thereto 
and who has in his cabinet a good collection of Coleoptera im- 
ported in Baltimore, mostly, however, South American species, 
which, of course, have no chance of getting acclimatized in North 
America. A good, though isolated, effort in this direction was 
made in 1876, when a committee, consisting of Drs. Horn, Le- 
Conte, and Leidy, prepared and published a report on insects im- 
ported at the Centennial Exhibition in Philadelphia. Dr. C. V. 
Riley published independently another report on the same sub- 
ject, but the list of imported 'species which were discovered on 
that occasion is not a large one, and I venture to say that an equal 
number of species could be found in the cargo of any steamer ar- 
riving at our ports. 
