Directions for collecting and preserving insects . keleton, Cole-optera can be collected, handled, and preserved with greater safety andwith less trouble than most other orders of insects. From this fact, andfrom their very great diversity in form, Coleoptera have, next to theLepidoptera, always been favorites. As a consequence, there are nowmore species described in this than in any other order, and in the largemuseums they are much better represented than other insects. Thisrich material has been studied by numerous and competent specialists,and the classification of Coleoptera is at present
Directions for collecting and preserving insects . keleton, Cole-optera can be collected, handled, and preserved with greater safety andwith less trouble than most other orders of insects. From this fact, andfrom their very great diversity in form, Coleoptera have, next to theLepidoptera, always been favorites. As a consequence, there are nowmore species described in this than in any other order, and in the largemuseums they are much better represented than other insects. Thisrich material has been studied by numerous and competent specialists,and the classification of Coleoptera is at present more advanced andmore accessible than that of the other orders. This fact gives stimulusto neophytes, and thougn the literature of our North American faunais much scattered and we are still in want of comprehensive works(with the exception of the general Classification by Drs. Le Conteand Horn), yet, except in a few hitherto neglected families and smallergroups, the species are fairly well worked up. [43] COLLECTING AND PRESERVING INSECTS On the other hand, our knowledge of the earlier states of Coleopterais yet very imperfect as compared with the Lepidoptera. Coleopterouslarva? are, with few exceptions (notably Coccinellidse and some , much more difficult to find and rear, and their distinguishingcharacters are more difficult to study. The few comprehensive workson Coleopterous Iarvo3 that have been published are based on ratherscant material and none of them deal with the North American fauna. Coleoptera occur in all climates and in all localities. Species areknown from the highest northern latitudes ever reached by man, and inthe tropics they occur in an embarrassing richness of forms. They arefound in the most arid desert lands, in the depths of our subterraneancaves, and on our highest mountains up to the line of eternal open ocean and the open water of ourGreat Lakes are the only regions free fromthem. As a rule, the number of species grad
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