CLASS VIII. 
INSECTS (WSECTA)'. 
LInN&US united all those invertebrate animals, whose body is 
divided into rings and which have feet consisting of different joints, 
into a single class, that of Insects. Together with the class of 
Ringed-Worms they make up one of the four principal groups into 
1 There is no class of animals on which more has been written than that of Insects ; 
comp. LATREILLE, who has given a sketch of the history of Entomology (Mém. du 
Museum, vit. 1822, pp. 461—482, also J. N. E1seur, Geschichte, Systematik und 
Litteratur der Insectenkunde, Leipzig, 1836, 8vo, and J. PercHERON, Biblioyraphie 
Entomologique, Paris, 1837, 2 vols. 8vo). As observers deserve to be named especially 
Réaumur (Mémoires pour servir & UV Hist. des Insectes, Paris, 1734—1742, 6 vols. 4to), 
A. J. Rorsen (Insecten-Belustigung, Niirnberg, 1746—1761, 4 vols. 4to0, with excellent 
coloured figures) and C. Dr Garr (Mém pour servir aU Hist. des Insectes, Stockholm, 
1752—1778, 7 vols. 4to). The anatomy was excellently treated by our great country- 
man, SWAMMERDAM (Biblia nature, Leiden, 1737, 2 vols. fol.), and afterwards by 
P. Lyoner (Zraité anatomique de la Chenille qui ronge le bois de Saule, la Haye, 1762, 
4to). In this part also in the present century RampoHR, TREVIRANUS, HEROLD, 
Branpt, Lion Durour, Srravus, DrvcKHEIM, BuANcHARD, NeEwport, &c. have 
published many important investigations. Comp. the Articles, Jnsectes, by AUDOUIN, 
in the Dictionnaire classique d’Hist. nat. Tom. vit. 1825, pp. §59—579, and Insecta, 
in Tovp’s Cyclopedia of Anat. and Physiol. 11. 1839, pp. 873—994.- 
As general works, introductions and systematic handbooks, the following, amongst 
others, may be used with advantage : 
J.C. Fasricit, Philosophia Entomologica, Hamburgii et Kilonii, 1778, Svo. 
Kjusd. Entomologia Systematica, Hafnie, 1792, Iv. Tom. (6 vols.) 8vo; Index 
alphabeticus, in J. C. Fasricit, Entomol. System. Hafnie, 1796, 8vo. Supplementum 
Entomol. Systematic, Hafnie, 1779, 8vo. 
P. A. Latreruin, Hist. natur des Crustacées et des Insectes (suite aux CHuvres de 
BuFFon, par Sonnrni), Paris, 1802, 1803, 14 vols. 8vo, avec fig. 
Bjusd. Genera Crustaceorum et Insectorum, Parisiis et Argentorati, 1806, 1807, 
Iv. Tom. 8vo. 
W. Krrsy and W. Spence, Introduction to Entomology, 5th Edit. London, 1828, 
4 vols. 8vo. 
H. Burmeister, Handbuch der Entomologie, 1 Bd., Algemeine Entomologie, Mit 
16 Steindriicken, 4to. Berlin, 1832, 8vo. 
J.O. Westwoop, An Introduction to the modern Classification of Insects. Lon- 
don, 1840, 2 vols. 8vo (with many woodcuts). 
As engravings we may, besides RoESEL, especially notice the figures of the Zcono- 
graphie du Regne animal; by GuERIN, and those of the Dictionn. des Sciences naturelles, 
which are also to be found in A. M. C. DumériL, Considerations générales sur la Classe 
des Insectes, Paris, 1823, 8vo. 
