DTJEHAM DIPTEBA. 30 7 



XXXIV. 496. 



42 (39). Only X.4. clouded ; scutellum yellow ; thorax grey ; 



legs yellow ; tip of the fore and mid tibiae and the 



four last joints of the fore and mid tarsi as well as 



the last joints of the hind tarsi black-brown. 



{lateralis, Mg.) 

 42a (34). X-veins not clouded. 



43 (46). Hind tibiae without bristles on the outer side. 



44 (45). Legs orange ; femora black-grey dusted, except the 



base of the mid, and the tips of all, but sometimes 

 they are all orange. (2232. villipes, Ztt., $) 



45 (44). Legs all black, dark grey dusted ; hairs of the legs 



and abdomen exceedingly long, (dasythrix, Beck.) 



46 (43). Hind tibiae with bristles on the outside. 



47 (50). Hairs of the whole body, especially the legs and 



pleurae, very long and fine; antennae entirely 

 black. 



48 (49). Legs blackish brown except apical half of fore and 



mid tibiae. (Jslandica, Beck.) 



49 (48). Legs all reddish yellow except part of fore femora. 



(2232. villipes, Ztt., $) 



50 (47). Body hairs not remarkably long and fine ; antennae 



red-brown; third joint black. (2231. litorea, Fin.) 



498. Coniosternum, Beck. 



1 (2). Palpi not dilated at the tip ; frons red ; halteres pale 



yellow ; face white ; X-veins not clouded. 



(2241. obscitrum, Fin.) 



2 (1). Palpi distinctly dilated ; frons and halteres dark ; face 



dirty grey; X.4. very distinctly clouded; X.5 2 more 

 faintly so. {tinctinervis, Beck.) 



499. Clidogastra, Mcq. 



1 (4). All tibiae orange. 



2 (3). Head yellow ; thorax shining black. 



(2242. nigrita, Fin.) 



3 (2). Head black ; thorax grey dusted. {nigriceps, Beck.) 



4 (1). Only the fore tibiae orange. 



