THEMIRA. 211 



nearly twice its length from the prfebrachial transverse, and by about 

 its length from the border. Abdomen slightly petiolated, convex, 

 arched, pubescent, curved beneath at the tip ; first segment long, tumid 

 above on the hind border. Legs slender, not bristly, miarmed in both 

 sexes. Metatarsi long. Male. Abdomen su])clavate. Fern. Abdomen 

 elongate-oval. 



■ 1. cylindrica, F. E. S. iv. 336. 104 (1792) ; Meig. ; Mcq. ; Zett. 

 — nitkhda, Fal. — putris, Desv. Nigro-renea, antenuis rutis, thoracis 

 lateribus antice et postice rufis, alls hyalinis apice obscuris, abdomine 

 ffineo-cupreo, pedibus flavo-fuscis. Long. lf-2i; alar. 2i-2|- lin. 



iEneous-black. Head black in front ; epistoma red. Antennse red ; 

 arista black, red at the base. Sides of the thorax and scutellum of the 

 metathorax seneous, shining, the former red in front and lieyond. 

 Wings limpid, yellowish at the base, brownish at the tips. Halteres 

 white. Abdomen a^neo-cupreous, shining, Legs yellow ; posterior fe- 

 mora brown in the middle ; hind tibiag bi'own ; middle tibiae pale brown 

 above ; tarsi brown, the anterior yellowish-brown at the base. Yar. ^. 

 Male. Middle tibire brown. 



Generally distributed. (E. S, I.) 



The following additional species of Nemopoda have been re- 

 corded as British : — 



1. stercoraria, Desv. 3. tarsalis, TFalk. 



2. nigricornis, Meig. 4. fumipennis, TFalk. 



Genus IV. THEMIRA. 



Themira, Desv. E. M. (1830); Mcq. Musca p., F. ; Schr. ; Gmel. 

 Sepsis p., Fal. ; Meig. ; Curt. ; Zett. 



Arista pubescens, basi crassa, Metathoracis scutellum bene determina- 



ium. Alee immaculatfB. Abdomen vix j}etiolatuvi, depressum. Mas. 



Abdomen fere lineare, apice plerumque setosum ; segmentum primum 



longum. Jemora et tibice antica subtus dentata el spinosa. Foem. 



Abdomen longi-ovatum ; segmenta subfequalia. 



Body nearly linear. Sixth joint of the antenna) pubescent, stout at 



the base. Scutellum of the metathorax distinct. Wings unspotted ; 



costal vein ending on the hind border at a short distance from the tip 



of the wing ; subcostal ending at a little before one-third of the length ; 



mediastinal ending before half the length ; radial ending beyond tive- 



sixths of the length ; cubital ending at the tip ; pntbrachial diverging 



from the cubital between the transverse veins, slightly converging to it 



from the discal transverse to the tip ; discal transverse straight, almost 



upright, parted by more than twice its length from the pr.ebrachial 



transverse, and by nearly its length from the border. Abdomen nearly 



