106 EMPID.E. 



taceous. Wings dusky ; costa and veins of the tip bordered with a deep 

 tinge; small transverse veins of the base bordered with deep brown; 

 another spot surrounds the fork of the apical vein, and a third includes 

 the ordinary transverse vein ; these markings are rather diffused and 

 cloud-like, but deeply coloured. Abdomen with a blackish indented 

 dorsal stripe. Hinder legs and fore femora testaceous, the latter at the 

 base dusky, glossed with grey, with 3 spines beneath. Male. Hypopygium 

 nearly as in H. stagnalis, with an elongated reflected style pale at the 

 tip and terminated by a curved seta. Fore femora tufted with hairs 

 beneath at the apex. 



In Mr. Halida/s collection. (S. I.) Common enough in many 

 places, such as lakes, rivulets, and on the ground moistened by 

 their overflow, under the shade of trees. (E. S. I.) 



4. unicolor, Ct. b. e. (1834). Roberta ? M.^.Bo7iemanni, Ztt. 

 Olivaceo-fusca, subtus cinerea, femoribus apice coxisque luteis, alls im- 

 maculatis. Long. 1^ ; alar. 4 lin. 



Olive-brown, grey beneath. Face subquadrate, silvery -white. Coxae 

 and tips of the femora luteous. Wings unspotted. 



Bare. In Mr. Holiday's collection. (E. S.) 



Genus VII. WIEDEMANNIA. 



WIEDEMANNIA, Ztt. i. 1. (1837). Heleodromia p., Ct. 



Corpus gracile. Caput infra oculos elongatum, epistomate angulatim 

 inflexo bifido. Proboscis crassa, descendens, palpis incumbentibus. 

 Antennae 5-articulataa; articulus tertius apice attenuatus, quinto 

 brevior; quintus setiformis, brevis, curvatus. Alse angustae, vena 

 cubitali furcata, externo-mediis 3 ex areola discali irregulariter pen- 

 tagona excurrentibus, costali marginem posticum attingente. Coxa 

 femoribus breviores. 



Body slender. Cheeks prolonged under the eyes. Epistoma bifid; its 

 inflection forming an angle. Proboscis thick, declining, with incumbent 

 palpi. Antennaa 5 -jointed; third joint attenuated at tJie tip, shorter 

 than the fifth ; fifth setiform, short, curved. Wings narrow ; cubital 

 vein forked ; costal vein attenuated around the posterior margin ; 3 ex- 

 terno-medial veins proceeding from the irregularly pentagonal discal 

 areolet. Coxae shorter than the femora ; empodium thickened in a 

 brush like the onychia. 



Obs. Clinocera seems to differ from Wiedemannia chiefly in the 

 form of the discal areolet, which is hexagonal, as in Heleodromia ; 

 while in Wiedemannia it is nearly pentagonal, the first and second 

 externo-medial veins springing almost together from the elongated 

 anterior apical angle. 



