8 NATURAL HISTORY OF WASPS. 
in his wonderfully learned Index, for which ento- 
mologists can scarcely thank him enough, gives a 
list of scarcely more than fifty writers on this branch 
of Entomology, the greater part of whose works on 
this subject consist of papers contained in journals 
or transactions of societies. To several of these 
authors it will be sufficient to refer from time to 
time; but there are others whose works have been so 
constantly in my hands that I could not adequately 
express my oligations to them by such occasional 
citations. Of these, I subjoin a list :— 
Burmeister. ‘Manual of Entomology,’ translated by 
Shuckard. 8yo. London. 1836. 
De Saussure ‘Etudes sur la Famille des Vespides. — 
3 tomes. 8vo. Genéve et Paris. 1852-58. 
Hunter. ‘Observations on Bees.’ Collected Works. 
Vol. IV. 8vo. London. 1837. 
Kirby and Spence. ‘Introduction to Entomology.’ 
7th edition. Small 8vo. London. 1856. 
Newport. ‘Insecta, Cyclopedia of Anatomy and 
Physiology.’ Vol. Il Roy. 8vo. London. 
1836-39. 
Smith. ‘Catalogue of British Fossorial Hymeno- 
ptera, Formicide, and Vespide in the British 
Museum. 12mo. London. 1858. 
Westwood. ‘Introduction to the Modern Classifica- 
tion of Insects.’ 2 vols. 8vo. London. 1839-40. 
Westwood. ‘ Entomologists’ Text-Book.’ 12mo, 
London. 1838. 
Wood. ‘Homes without Hands.’ 8vo. London. 
1866. 
