558 Zoology. 



Hymenoptera. 



With the exception of the Chalcididse, which were revised 

 by Mr. F. Walker and catalogued from 1846 to 1848, it is 

 probable that no systematic arrangement of the Order was 

 carried out until Mr. F. Smith took it up subsequent to his 

 appointment in 1850. In 1851 his first British Catalogue, and in 

 1853 his first General Catalogue, appeared, the last volume of 

 which was published in 1859. In 1855 Mons. T. Desvignes 

 revised the Ichneumonid&e, of which a list was published in 1856. 

 In 1880 and 1881 Mr. W. F. Kirby rearranged and studied 

 the families Tenihredinidse and Siricidee, a catalogue of which 

 appeared in 1882 ; he also commenced the Cynipidse, Euaniadse, 

 and Chalcididse. In 1897 Col. Ch. Bingham commenced a 

 rearrangement of the Order, with the family Pompilidse, which he 

 has now completed and has since then arranged the Formicidse 

 and commenced the Vesjpidse. 



Diptera. 



The first systematic arrangement of the Museum collection 

 of this Order was probably attempted by Adam White during 

 the first ten years of his service. In 1847 the collection was 

 taken up by Mr. F. Walker, who published his first catalogue-list 

 in 1848 and his last in 1855 ; in 1874 Mr. F. Smith arranged 

 the Order, completing it in 1875. In 1890 Mr. E. E. Austen 

 beo-an the arrangement and formation of a British Collection of 

 Diptera, the collection previously existing having been much 

 neglected; in 1891 he began the rearrangement of the Syrphidss 

 of the General Collection, and completed that of the British 

 Hippoboscidse and (Estridee; the Syrphidse were continued in 1892 

 and 1893, the British Limnobidse, Tipulides, Chironomidse and 

 Bibionidse being also arranged in the latter year ; in 1894 and 

 1895 he arranged the British Muscid&e and the Cutiterebrinse of 

 the General Collection ; in 1896 the British Gonopid&e, Leptidw, 

 and Bombylidse were arranged, and the Ortalidse and Trypetidae 

 commenced; in 1897 and 1898 the British Cordyluridas were 

 studied with a view to their arrangement. In 1900 the study, 

 arrangement, and monographing of the Gulicidse (mosquitoes) 

 were undertaken by Mr. F. V. Theobald, who published the first 

 two volumes of his monograph of the family in 1901, and the 

 third volume in 1903. In 1901 Mr. Austen arranged or 



