424 THE MOUNTAIN. 



back, and the two under ones are thin and folded together 

 like a fan. They differ from those of the preceding order 

 in that they have strong jaws instead of a movable pro- 

 bocis, as, e.g., the Grasshopper, Cricket, and many others. 



IV. Lepidoptera. Butterflies, Hawk-moths, and Moths. Insects 



with four expanded wings, covered with colored farinaceous 

 scales. 



V. Neuroptera. Net-winged Insects. Those which have four trans- 



parent, net-woven, or lattice-like wings, as the Dragon-fly, 

 etc. 



VI. Hymenoptera. Vein-winged Insects. With four transparent, 



veined wings, and generally provided with a venomous 

 sting, as Bees, Wasps, etc. 



VII. Diptera. Two-winged Insects. As Flies and Mosquitos. 



Following are two other systems used by entomolo- 

 gists : 



CLASSIFICATION OF STEPHENS. 

 His first general division of insects is into two sub-classes. 



First Sub-class. Mandibulata. 



Order 1. Strepsiptera. Order 4. Dermaptera. 



" 2. Orthoptera. " 5. Trichoptera. 



" 3. Neuroptera. " 6. Hymenoptera. 



Second Sub-class. Haustellata. 

 Order 1. Hemiptera. Order 5. Homaloptera. 



" 2. Homoptera. " 6. Aphaniptera. 



" 3. Lepidoptera. " 7. Aptera. 



" 4. Diptera. 



WESTWOOD'S CLASSIFICATION. 



First Sub-class. Dacnostomata. 

 (Mouth with Jaws.) 



Order 1. Hymenoptera. 



(?) Osculant Order, Strepsiptera. 

 Order 2. Coleoptera. 



Osculant Order, Euplexoptera. 



