70 STUDY OF NATURAL HISTORY. 
European Hemiptera is unquestionably that of 
Wolff*, published in fasciculi or parts ; but we know 
not, with certainty, how many have appeared. Wolff 
adopts the Fabrician system ; and both in his de- 
scriptions and figures he is very superior to the 
generality of Iconographers. In the same year, 
Schellenberg +, a painter of Zurich, figured many 
insects of the same order inhabiting Switzerland ; 
and subsequently published an indifferent work upon 
the two-winged genera, or Diptera. The Entomo- 
logical plates of our countryman Donovan, although 
frequently too highly coloured, and not sufficiently 
accurate in the more important details, are often 
elegant, and frequently useful, especially those con- 
tained in his three quarto volumes, where a great 
number of species are delineated for the first time. 
Little, however, can be said in praise of his works 
on other departments of British Zoology, the colour- 
ing of which is gaudy, the drawings generally un- 
natural, and the descriptions unsatisfactory.t The 
works of Uddman, Barbut, Bradley, Martyn, Mar- 
sham, and a few others, published at different periods, 
are too subordinate to deserve a particular notice. 
* JT. F. Wolff. Icones Cimicum, Descriptionibus illustrate. 
Erlange, 1800. 4to. 
+ J. R. Schellenberg. Cimicum in Helvetia Aquis et Terris 
degens Genus. Turici, 1800. 8vo.— Genres des Mouches 
Diptéres, Zurich, 1803. .8vo. 
¢ Ed. Donovan. (1.) The Natural History of British Insects, 
explaining them in their several States, illustrated with co- 
loured Figures. London, 1792—1820. 16 vols. royal 8vo.— 
(2.) General Illustration of Entomology; being Epitomes of the 
Insects of China, India, an New Holland. London, 1798— 
1805. 3 vols. 4to. 
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