52 REVIEWS. 



Pyrenees, the Riesengebirge, and Caucasus, respectively, by Ghiliam, 

 Dnfour, Kiesenwetter, Kolenati, and others ; but scarcely one of them has 

 produced a picture more full of life, or rich in details, than Zetterstedt, the 

 earliest of the list. The greatest number of the new Dipterous genera, 

 and a large proportion of new species, were characterized in this volume ; 

 but we propose to treat all such together in our examination of the DIPTERA 

 SCANDINAVLE. This great work, a monument both of untiring industry, 

 erudition, and acute discrimination, is comprised in eleven 8vo volumes, 

 which average above four hundred pages each ; and the publication, com- 

 menced at the author's own expense, and afterwards worthily sustained by 

 the public purse, has extended over a period of ten years. After a short 

 preface, and list of works cited, an hundred and three pages are given to 

 the analysis and characteristic of the families and genera. A final index 

 of one hundred and ninety-two pages, containing the synonyms, as well 

 as the generic and trivial names of the text, affords every facility for re- 

 ference that can be desired. The specialities, analysis, description, and 

 history of the species, with supplementary characters of the genera (two 

 hundred and eighty-five in number), fill nearly four thousand two hundred 

 and fifty pages, giving for each of the 3,462 species described, after all 

 deductions, a good deal more than a page on the average. Of this num- 

 ber, 1,585 purport to have been first described in one or other of the books 

 we have titled, making the proportion rather more than five new species to 

 six previously included among the European Diptera of Meigen ; and of 

 these last, Fallen had recorded but 845, where Zetterstedt has 1,260 in 

 the corresponding families ; so largely has the older stock of Fallen and 

 Fries been added to by the author's own travels in Lapland, and by the 

 communications of Dahlbom, Wahlberg, Anderson, and Skogmann, 

 from the same source; of Liebke, in Norway; Sahlberg, Nylander, and 

 Mannerheim, in Finland; Stager, Schioadte, Drewsen, Boje, Jacobsen, 

 and Westermann, in Denmark ; besides a list of about twenty corre- 

 spondents in the Swedish provinces, including the honoured names of 

 Schbnherr and Bohemann. When will our own islands furnish such help 

 to any one who may undertake for them a task like that Zetterstedt has 

 achieved for his country ? Particular attention has been paid to the geo- 

 graphical distribution of the species, and various localities are assigned for 

 most of them ; so that the names of some of these correspondents recur as 

 authorities almost in every page. These volumes of Zetterstedt's are the 

 more available to the British student, as they are wholly written in Latin 

 fair, entomological Latin ; a quality which, without pretending to clas- 

 sical nicety, we are not disposed to undervalue, with the recollection fresh 



