556 



AUTHENTIC HISTORY 



of being extended to a considerable length ; and is employed in collecting honey from 

 flowers. The females are provided with an ovipositor — either exserted or concealed — 

 which, in some species has the form of a pair of small saws, in others elongated into 

 slender iilainents, and in others again, assuming that modification of form called a sting. 

 The head is furnished with a pair of antennas that vary very much in the numl)er of 

 their joints, from live or six to sixty or seventy. The eyes are complex and lateral, and 

 between them arc three ocelli, or small eyes, commonly disposed in an equilateral trian- 

 gle, but occasionally almost in a transverse line. The tarsi, in most cases, are five- 

 jointed. 



Lancaster county contains a lai-ger number of these insects than have been thoroughly 

 studied, or can be enumerated in this catalogue; many of wliicli have been described 

 by foreign Entomologists, and the works in Avhich they are described not of convenient 

 access ; therefore, only an approximation can be made to the real number and variety 

 which our territory aftbrds, and that numl)cr will be found to include many that are 

 found in adjacent localities. 



The order is divisible into the following Sections, Suh-Sections and Families; and these 

 again into numerous Genera, Groups and Si^ecies, with their correlations and character- 

 istic, which are too numerous and minute to find a place in a mere catalogue. 



SECT. I. TEREBBANTIA. 



Abdomen of the females furnished with 



saw or borer. 

 Sub-section, SECURIFERA — abdomen 



sessile; larvae with feet. 



Tenthredinid.!":. "Saw-flies." 



CiMBEX Olv. 



americana Lch. 



ulmi Pck. 



laportii Ilav. 

 LoPHYRUS Lat. 



araericanus Lch. 



compar Lch. 



abietis Jlar. 



abbottii L^ch. 



lecontii Fch. 



fabricii Lch. 



pectoralis Lch. 



clavicornis Fah. 

 Sela^'dria L.ch. 



vitis liar. 



rosae liar. 



cerasi Pk. 



pygmaea Harf 



halcyon liar? 



pyri? Nob. 



barda Uarf 

 Allantus Jur. 



rufipes Say. 



basilaris Say. 

 TENTHr.EDO Lin. 



sericea Say. 



arvensis Say. 



bicolor P. de B. 



iuornata Say. 



septentrionalis Fah. 



mellipes Har. 



tarsata liar. 



collaris Say. 



dorsalis Har. 

 Nematus Jur. 



integer Har. 



ventralis Har. 



fulvipes Har. 



circumcinctus Klg. 

 Janus Fch ? 



fidviventris Fch. 

 Abia Fch? 



cerasi Fch. 

 Phyllacus Fch ? 



trimaculatus Soy. 

 Lyda Fah. 



scripta Say. 



rufofasciata Liar. 



XlFHYDRIADJi. 



Cei'Hus Ljal. 



ferruginea Say. 



filicornis. 

 XiPHYDRIA Lat. 



albicornis Har. 



mellipes Har. 



IjROCERIDyE. 



Tremex Jur. 



columba Linn. 

 Urocerus Fab? 



