EEVIEW or LITEEATUBE. 



work was for a long time generally passed in silence ; sometimes, 

 however, it became clear that his views on generic separations 

 were just, and since several of his genera have been adopted. 



F. Walker has given a list of the Dipterous insects in the British 

 museum, 7 vols. (1848 — 55); in vol. I — IV the whole order is 

 treated. Vol. V — VII are a supplement, at least for some families 

 and contain short analytical tables for the distinction of the genera 

 and species, the latter separately from the different parts of the 

 world. It seems that all the species , known at that time , are 

 included there, though it cannot be admitted that they all are 

 represented in the museum, as it may be deduced from the title 

 of the work. From Walker's Diptera Britannica (London, 1851 — 

 56) it is needless to speak here. His Diptera Saimdersiana on the 

 contrary contain more than 700 descriptions of exotic Diptera, with 

 several characteristic figures by Prof. Westwood. Numerous Asiatic 

 species of Diptera , among which those collected by Wallace on his 

 travels in the Indian archipelago ,• are described by Walker in the 

 Proceedings of the Linnean Society at London. Walker's descriptions 

 are generally superficial and often inexact. 



Professor J. 0. Westwood , though a general entomologist, has 

 written many papers on Diptera, exhibiting his talent of making 

 the objects intelligible. 



Professor H. Low was at once one of the most learned and of 

 the most active authors on Dipterology. His numerous papers, for 

 the greater part published in different scientific periodicals , are indis- 

 pensable to every one who studies this branch of science. Besides the 

 European Diptera, he has done much to advance the knowledge 

 of the Dipterous fauna ot North America and that of South Africa. 

 It is a pity that Asiatic Diptera have seldom been a subject 

 of his inquiries : only in a few papers he has described some 

 of them, 



A most excellent Dipterologist was Dr. J. R. Schiner. His 

 Famia Austriaca (Diptera), 2 vols. (1862 — 64) is a classic work, 

 still a valuable manuel for students in Dipterology. As to 

 exotic forms of Diptera, besides several papers in the Verhandlwncjen 



