V'^}^ INTRODUCTION 



THE MODERN CLASSIFICATION 



INSECTS; 



FOUNDED ON 



THE NATURAL HABITS AND CORRESPONDING ORGANISATION 



OF 



THE DIFFERENT FAMILIES. 



By J. O. WESTWOOD, F.L.S. 



HON. MEM. LIT. HIST. SOC. QUEBEC; MEM. SOC. CES. NAT. MOSCOW; PHYSIOGH. SOC. LUND; 



SOC. ROY. SCIENC. LILLE ; SOC. HIST. NAT. MAURITIUS ; SOC. CUVIER. PARIS ; 



PLIN. SOC. EDINBURGH ; LIT. PHIL. NAT. HIST. SOC. BELFAST, RICHMOND, SHEFFIELD ; 



MEM. SOC. ENTOMOL. DE FRANCE ; SECRETARY ENT. SOC. LONDON, ETC. 



" Empirici,/or?H2C(?? more, congerunt tantum et utuntur: rationales, aranearum more, 

 telasexse conficiunt: a/jwvero ratio media est, quse materiam exfloribushorti et agri elicit ; 

 sed tamen eam propria facultate vertit et digerit." — Bacon, Nov. Org. lib. i. .aph. 95. 



IN TWO VOLUMES. 



VOL. L 



LONDON: 



LONGMAN, ORME, BROWN, GREEN, AND LONGMANS, 



PATERNOSTER-ROW. 



1839. 



