OF LANCASTER COUNTY. 523 



or four wings; so that it will be observed, that strictly speakiiifr, inserts are six-fo..tod, 

 or hexapocls. The abdomen, besides containing the intestines, the matrix, and in many 

 species tlie breathing apparatus, is also terminated Ijy the sexual organs and the ovi- 

 positor, which in many species is obsolete, or modified into a stiii". 



CLASS INSECTA. 



The hexapodal animals called Insects, compose a distinct Class in the sub-animal 

 kingdom Articulata; but this six-footed characteristic only refers to the perfectly ma- 

 tured adults; for whilst they are in the larva state, many of them are without distinct 

 feet, many of them have a greater or lesser number of abdominal feet, called prolcgt. 

 The Class Insecta is divided into Orders, and these orders arc sub-divided into Tribes, 

 Families, Genera, Groups and Species, or their ecpiivalents. 



ORDER COLEOPTERA. 



At the head of the class, iisually, is placed the order Coleoptera, or the insects commonly 

 called "Beetles." This name is derived from the two Greek words Coleos — a sheath 

 or shield, and pteron, a wing, or sheath-winged insects. The term was first used by 

 Aeistotle, and has been almost universally adopted by subsequent naturalists, although 

 many subjects, originally included in it, have since been eliminated, and formed into 

 new orders. 



The order is defined by its subjects, having two membranaceous wings, folded longi- 

 tudinally and transversely, beneath two horny or leathery elytrce, or wing-covens, 

 uniting in the middle by a straight suture down the back; the mouth is provided with 

 mandibles or jaws, and the metamorpJiosis, or change from one state to another, is com- 

 plete — that is, not gradual, the pupa being quiescent and distinct. The subjects of this 

 order, that have been found in the county of Lancaster, may be divided into the fol- 

 lowing Sections, Sub-Sections, Families and Genera, of which there are numerous 

 species, and more or less variety: 



ORDER COLEOPTERA. CARABlDJi— Predaceous Beetles. 



Section PENTAIIERA; in which all the Casnonia Latr. 



tarsi are iive-jointed. pensylvanica Linn. 



Sub-section CARNIVORA— Carnivorous Leptotkaciielus Lat. 



Beetles. dorsahs Fab. 



CiciNDELiDJE — Tisrer-beetles. 



LAcnxopnoRUS Dej. 

 subsulcatus Fab? 



CiNCiNDELA Li7in. pubescens Dej. 

 vulgaris Sai/. Galerita Fab. 



punctulata Oliv. jamis Fab. 



hirticollis Say. bicolor Dru. 



sexguttata Fab. americana (Var.) 

 octoguttata (Var.) Cymixdis Lair. 



marginalis Fab. americana Dej. 



purpurea Oliv. pilosa Say. 



patruela Dej. sinuata Say. 



unicolor Dej. neglecta Hald. 



duodecemguttata Say. laticollis Say. 



marginipennis Dej. limbata Dej. 



gravida Lee. f«scata Dej. 



decemnotata Say. punctigera Lee. 



limbata? Say. cl^ga"^ ^''- 



