MosLEY : On Classification of Beitish Insects. 



7 



which produced them are placed in another, the imago having a hau- 

 stellate mouth, and the larva a mandibulate one. 



The following arrangement of the orders of British winged insects, 

 I think, will meet all the requirements of a collection arranged for 

 public inspection, viz : — 



1. Hemiptera 5. Lepidoptera 



2. Orthoptera 6. Hymenoptera 



3. Coleoptera 7. Diptera 



4. Neuroptera. 



Now let us proceed to consider these various orders more particu- 

 larly, and see what relation they bear one to another. The class 

 Insecta, I think, should be begun by the Apterous division, say by the 

 Anoplura (lice). Going backwards, we pass on (out of the insects) 

 into the mites, spiders, and crustaceans ; and going forward we pass 

 from the lice to the Thysamira,, and from them to the 



1st Ord., Hemiptera. — I place this order nest to the Aptera, 

 because their habits are somewhat similar, as regards the mouth and 

 matamorphosis, and the wings of Hemiptera are very frequently 

 either entirely wanting, or are only rudimentary. The order is 

 generally divided into two sub- orders, sometimes ranked as distinct, 

 but clearly so nearly allied as not to be distinctly separable. 



Sub-Ord.j 1. Heteroptera. 'I. Homoptera. 



The sub-order, Heteroptera, differs from the Homoptera in 

 having the basal part of their fore-wings leathery, and the tips mem- 

 branous. It is divided into two sections — 



Auracoriza^ or land-bugs, living upon various kinds of plants, 

 and sucking their juices ; and 



Hydrocoriza^ or water-bugs, of whi^h examples may be found 

 in every pond, the water boatman being a well-known 

 example. 



This order is too extensive, and the species and genera too similar, to 

 admit of further notice here. 



The Homoptera are divided by Westwo^ol into three primary- 

 sections : 



See. 1. Trimera^ in which the tarsi are 3-jointed. 

 „ 2. JHmera, .„ 2 „ 



„ 3. Monomera, „ 1 „ 



The Trimera include the family Cicad?©, of which we have, I believe, 

 only a single species {CkoAm Angelica) in Britain. In foreign couutrieg 



