IS82.] 29 



ANNOTATED LIST OF BRITISH AIsTMOMYllD^. 



BY R. 11. MEADE. 



{Continued from Vol. lyiu, page 210). 



17. LASIOPS, Meig. 

 Gen. cJi. — Eyes of male hairy, contiguous or sub-contiguous ; 

 arista sub-pubescent or bare ; abdomen ovoid or narrow, and depressed ; 

 alulets small, lower scale nearly or entirely covered by upper one ; 

 wings with the third and fourth longitudinal veins parallel, or a little 

 convergent, and with the anal vein prolonged to the margin ; legs with 

 the hind tibiae ciliated on both sides. Eyes of female only slightly 

 pubescent. 



1. CTENOCNEMA, KowarZ. | 2. EOEDEEI, Kz. 



3. Meadei, Kz. 



I have remarked under the genus Tric^ioplithicus that the generic 

 name Lasiops had been reserved by Eondani and Kowarz for a small 

 group of Anthomyds which have hairy eyes, naked aristse, very small 

 alulets, and prolonged anal wing veins. Zetterstedt described two 

 species in his great genus Aricia which belonged to this group {A. 

 glacial is and A. erioplithalma') , and Rondaiii one in his genus Lasiops 

 (i. anthomyinus). None of these have been yet found in Britain, but 

 Herr Kowarz, in his elaborate monograph, has determined five others 

 in addition to the above, three of which belong to the British Fauna. 

 These little flies closely resemble each other, and only differ by slight 

 structural points, so that they may easily be confounded, and are vei'y 

 difficult to discriminate. They all have the back of the abdomen 

 marked by a broad black longitudinal stripe, as well as by transverse 

 black bands on the edges of the segments, so that the surface is divided 

 into eight squarish grey patches, much in the same way as the abdomen 

 of Antliomyia radicum., Linn., is marked ; hence the name of L. antho- 

 myinus given to the Italian species by Eondani. 



L. ctenocnema, Kz. 



The eyes in the male of this species are contiguous in the middle, and covered 

 thickly with longish hairs ; the thorax and scutellum are shining and brownish- 

 black, the former is indistinctly striped, and whitish-grey on the sides and front 

 edge ; the abdomen is oblongo-conical, pointed at the apex, which is black and 

 shining, with the sub-apical appendages {hypopygium) small, and the ventral lamellae 

 projecting and somewhat hairy ; the alulets have the scales slightly unequal, and are 

 fringed with long yellowish hairs ; the wings have a brown tinge, with the third and 

 fourth longitudinal veins decidedly convergent, and the external transverse veins 



