546 



AUTHENTIC HISTORY 



abdoraiiialis Say. 

 Mysia Muls. 

 mali Say. 



PSTLLOBORA MulS. 



20 maculata Say. 

 Chilocorus Lch. 



bivulnerus Muls. 

 Brachyacantha MuU. 



dentipes Fab. 



iirsiiia Fab. 



biguttata Lee. 



decenipustulata Mis. 

 SCYMNQS Kuc/. 



terminatus Say. 



Hyperaspis Redt. 



fimbriolata? Mis. 

 Epilachna Red. 



borealis Thunberg. 



Sub-Section PSELAPHIENA. 

 PSELAPHID^E. 



PsELAPHirs Hbsl. 



dentatus Say. 

 Batrisus Aub. 



riparius Say. 



lineaticollis Axib. 



ORDER ORTHOPTERA. 



The insects inckided in this order are those commonly known under the names of 

 Earwigs, Cockroaches, Grasshoppers, Crickets, &c., and are generally characterized as 

 having two membranaceous wings, furnished with numerous nervures arranged longitu- 

 dinally, with transverse threads, enabling them to fold them up like a fan. These 

 wings lie beneath two coriaceous or leathery wingcovers, called elytra, which are also 

 provided with lunnerous nervures, and which, when closed, do not unite in a straight 

 suture down the back, but more or less overlap each other. Their mouth is essen- 

 tially provided with a well developed pair of jaws, called mandibles, and accompanying 

 organs, and therefore they are masticatory in their feeding habits. They are active 

 from the time the young are excluded from the eggs, until they reach maturity and 

 death; the imarjo and pupa states, being only distinguishable from the larva state, by 

 the gradual increase of size, and the development of the wings and wingcovers. In a 

 few species, however, the females are wingless; and in a less number, the wings are 

 much abbreviated in both sexes, or are entirely absent. This order of insects may be 

 divided into four groups or sections, dift'ering from each other very materially in form 

 and manner of locomotion, although retaining more or less of the general characteris- 

 tics: namely, the Cursoria, or Runners; Raptoria, or Graspers; Ambulatoria, or Walk- 

 ers; and Sanatoria or Leapers. But few species of the first three groups occur within 

 the limits of Lancaster county, or even in the State of Pennsylvania; but the species in 

 the last group are more numerous, some of which are very destructive to vegetation, 

 and include representatives of the true Loctists which belong to the grasshopper group, 

 the swarms of which are so destructive in the far West, the Mexican and Sou.th Ameri- 

 can States, and in various parts of Asia, Africa and Europe. 



CURSORIA. 

 All the legs formed for running; wings and 

 wing-covers generally horizontal; ovipos- 

 itor not exserted. 



FORFICULAD^. "Earwisfs." 



Forficula Linn. 

 americana ? 

 pensylvanica ? 



Blattiad^. 



Blatta Linn. 



" Cockroaclies." 



americana Linn. 

 orientalis Linn. 

 pensylvanica De 0. 

 parallela Har f 

 bicolor Pal. 

 campestris ? Nob. 



RAPTORIA. 

 Anterior feet foraaed for grasping; habits 

 carnivorous. 



Mantiad^. " Soothsayers." 



