PRESERVATION OF INSECTS. 289 



Piezatorum, by J. C. Fabricius. One volume, 

 written in Latin. Since this work was published, 

 much knowledge has been gained concerning 

 the insects which it describes. 



932. Hymenoptera Stirps, Apina, Monograph of 

 the Bees of England, (Monographia Apum Anglice\ 

 by William Kirby, in two volumes, with plates. 

 This work is written in Latin, and is the most 

 perfect entomological work that any country has 

 yet produced. Modern discoveries have, however, 

 added some facts concerning identity of species. 



933. Hymenoptera Order, Mym.arites. Essay 

 on Parasitic Hymenoptera, by A. H. Haliday, 

 published in the Entomological Magazine, Vol. I. 

 p. 341. In this Essay the whole of the British 

 species are described. 



934. Hymenoptera Order, Chalcites. Mono- 

 graph of Chalcites (Monographia Chalciditum), by 

 Francis Walker, published in the Entomological 

 Magazine, Vol. I. pp. 12, 115, 367, 455. Vol. IT. 

 148, 286, 340, and to be continued ; this most 

 laborious monograph will contain descriptions of 

 every British species. 



935. Hymenoptera Order, Evaniites. Ar- 

 ticle Insecta, by William Elford Leach, published 

 in the Edinburgh Encyclopaedia, Vol. IX. p. 142. 

 Three British genera and species described. 



936. Hymenoptera Order, Braconites. Essay 

 on the Classification of British Hymenoptera, by 

 A. H. Haliday, published in the Entomological 



