ZOOLOGY. 207 



rmed with a single claw, and lateral jointed/oo^; hind- 

 legs smooth, formed for walking. 



The insects of this genus are of the most curious forms, 

 flome resembling leaves of plants, and others, of shapes so 

 strange, as to appear to be composed of parts of various 

 insects. 



3. Phasma. Head large ; antennae filiform ; ei/es small 



rounded; stemmata between the eyes; v)ings four, 

 membranaceous ; the upper pair short ; the lower, 

 plaited ; feet formed for walking. 



4. Gryllus. Locust. //e«f/ inflected ; furnished with /arcs 



aaApalpi; antennce filiform, or setaceous ; icings four 

 deflected, convoluted ; the lower pair plaited ; hind~ 

 legs formed for leaping ; claws double on all the feet. 



In some of the warmer countries, this genera of insects 

 are, of all the pests that mankind are subject to, the most 

 injurious, destroying vegetables of every kind, and even 

 from their numbers alone, constituting one of the heaviest 

 afliictions that can happen to a country. The mischiefs done 

 by the Blattee or Cockroaches, is trifling, compared with 

 those of this destroying tribe, as the dreadful ravages com- 

 mitted by the Locusts, are such, as to reduce the most fer- 

 tile fields, to the appearance of barren deserts ; they devour 

 the fruits, leaves, and even the buds and bark of trees; and 

 have even been known to devour the reeds used in thatching 

 the habitations of the natives, so unfortunate as to be visited 

 by these devouring hordes. Most of th« species possess 



