PRACTICAL ENTOMOLOGY. 153 



this order are the most destructive, and thej are popularly termed 

 grubs. 



Order II. Hemiptera {Hemion.^ the half, 'ptera wings,) bugs, 

 tree lice, &c. Insects with four parchment-like wings and probos- 

 cis, with which thej pierce and suck animiil and vegetable juices. 

 The various kinds of plant lice and the bedbug belong to this order. 



Older III. Orthoptera {Ort/tos^ straight, ^j^era wings.) This 

 order includes grasshoppers, locusts, crickets, cockchafers. &c., and 

 are called straight-winged insects. They have four parchment-like 

 wings, strong jaws, and many of them long hind legs for leaping. 



Order IV. Neurojdera {Neitron, a nerve, ptera, wings,) net- 

 winged insects ; four net-like wings, as dragon fly, aphis lion, see fig. 

 5, termites, &c. They are inostly aquatic, and as the perfect insect 

 live but one or two days. Many of them are very beautiful. 



Order V. Lcpidoptera {Lipis, a scale, ptera wings,) butter- 

 flies, moths and sphinges. They comprise the most beautiful and 

 richly ornamented individuals of the insect world, and in the larva 

 or caterpillar state, are among the most destructive. Among them 

 may be named the various tree caterpillars, apple worm, bee moth, 

 grain moth, &c. In the perfect state they have two pairs of large 

 wings, which are very fragile and covered with dust-like scales, see 

 figs. 1 and 3. 



Order YI. Hymenoptera (/i^/mf^i, a membrane, ;j/era wings,) 

 vein-winged insects, with four transparent wings and generally pio- 

 vided with a venomous sting. To this order belong bees, wasps, 

 ants, ichneumons. This order comprises insects the most useful to 

 man. 



Order VII. Diptera {Dls, twice, j^tera wings,) two-winged 

 insects, as midge, mosquito, housefly, fig. 6, flea, hessian fly, gnats, hot 

 and horse flies : many of them are very troublesome. Their larvae 

 are found in various situations subsisting on vegetable and animal 

 juices. 



Cabinets. 



Before a collection of insects can be made, it will of course be 

 necessary to procure a receptacle for containing them, and imple- 

 ments &c., for preparing tliem. As regards size and cost of the 

 cabinet, that will of course depend on the taste and ability of the 



