REVIEWS. 57 



and 3 lines long, the male distinguished by the cheeks, hypopygium, fore 

 and hind thighs, and middle tibiaa being pectinated; generally found on 

 fungi in the northern provinces. Ampycophora Wlbg., identified by 

 Zetterstedt with Aulacigaster Macquart. Earomyia, like Lonchcea, face 

 more prominent, eyes smaller ; one species E. lonchceoides, 2 lines long. 

 Anthophilina, synonymous with Leptomyza Macquart. Lobioptera 

 Wlbg., allied to Milichia, but the fore edge of the wing with a deep in- 

 cision at the end of the subcostal vein, and the costal vein vanishes before 

 the end of the subapical ; one species L. ludens Wlbg., 1^ line long. 

 Selachops Wlbg., like Lonchcea, but the mediastinal vein indistinct, and 

 the ovipositor not protruded, form of the head somewhat like Tetanops, 

 the protuberant front overhanging the short antennae, the third joint of 

 which is round, with the naked arista implanted towards the tip ; one 

 species S. flavocincta Wlbg. (Eucodocera bicolor Lw.), occurring in the 

 northern and central provinces, and abundant on the banks of the Eiver 

 Luleaa. And of the " sections" of Stenhammar, but which are formally 

 named and divided as genera, Parydra Stnh. is synonymous with Napcea 

 Desvoidy, but the latter name pre-occupied in botany ; Epipela Stnh. is 

 Ilythea Hal. ; Philygria Stnh. is Hydrina Desvoidy, including Hyadina 

 and Axysta Hal. ; Clasiopa Stnh. is Discocerina Macq., as limited by 

 Haliday, A.D. 1839. HIPPOBOSCIDLE Leptopteryx, of rather doubtful affi- 

 nity, differing from the rest of this family by the distinctly triarticulate 

 antennas without an arista, long slender legs, and wings not distinctly 

 veined; L. nivalis, 1J lines long; a single specimen found crawling on 

 the mountain snow in Lapland. 



Among the more remarkable species made known by Zetterstedt, 

 are a species of Scenopinus, with the second branch of the cubital vein 

 again forked, S. furcinervis, and an Echinomyia, with 4-jointed tarsi, 

 E. tetramera. Only one specimen had occurred of each. May they not 

 be symmetrical monstrosities, such as are not without example ? 



The space will not allow us to pass in review the multitude of species 

 first made known in these volumes, or to indicate the synonyms of some, 

 which appear to have been described before. We hope to see this yet 

 done, as well for the " Diptera Scandinavia?," as the " Insecta Britannica," 

 when the concluding volume of the latter shall have appeared, since the 

 collation of both works may lead to more satisfactory results. 



We have endeavoured to arrive at some estimate, of course a very pro- 

 blematical one, of the relative numbers of Diptera in Sweden and in the 

 British Islands. Walker, in a preface to the second volume of " Insecta 

 Britannica," has expressed an opinion that the numbers may be about equal; 



