The number of different species of insects actually preserved in cabinets, is supposed to amount to at least 80,000; and when we consider the difficulties attending the collection of many species, and the numerous karen millen dresses regions still entomologically unexplored, we cannot but conclude that a vast proportion must be still unknown to Euro-peans*.
The amount of species in any particular region or country depends greatly on its temperature, moisture, and the nature of its vegetation; as also on the absence or presence of barriers (such as a ridge of mountains, or an expanse of water,) separating it from neighbouring countries. The general resultkaren millenis similar to that already spoken of with regard to vegetables, namely, that the number of species decreases as we recede from the equator and approach the
* The probable number of species of insects existing on the whole globe has been estimated at from 330,000 to 300,000.
poles. This will, of course, be subject to local variations* arising from local peculiarities*. *
The globe haskaern millen outletbeen divided into six entomological regions* according to the profusion or poverty ef species: infer, that a range of mountain^ more or less interrupted,