“DIPTERA. - 331 
f. Colour metallic. 
g. Prebrachial vein forming a right angle at its flexure ......... Lucilia. 
hebes, felix. 
gg- Prebrachial vein forming a hardly obtuse angle at its flexure. 
bicolor. 
999. Prebrachial vein forming a slightly obtuse angle at its flexure. 
leucocephala, serenissima, insularis, temperata, proxima, bigemmis. 
999 9- Prebrachial vein forming an obtuse angle at its flexure. 
h, Prebrachial vein not rounded at its flexure. 
varia. 
hh. Prebrachial vein rounded at its flexure. 
connexa. 
ff. Colour not metallic. 
g. Prebrachial vein forming a right angle at its flexure. 
placida. 
gg- Prebrachial vein forming an obtuse angle at its flexure. 
interrupta, contigua, dubia. 
999. Prebrachial vein forming a very obtuse angle at its flexure. 
costalis, determinata. 
ee. Prebrachial vein forming a gentle curve at its flexure. 
f. Colour metallic .........00.-8 OO EN Satna ae .. Pyrellia. 
chrysotelus, obscura, distineta, hasalis, oanidantik e extrema. 
ff. Colour not metallic ....... ee eeaneaseees «. Graphomya. 
g. Third feeler-joint about thrice the length of the secon 
stipata. 
99. Third feeler-joint more than twice the length of the second. 
vicaria, serva. 
Musca currera. 
Purpureo-cuprea ; caput testaceum ; pectus cinerascens; abdomen testa- 
ceum ; antenne fulve, articulo 30 supra piceo; pedes fulvi, tarsis 
nigris ; ale subcineree. 
Fem. Purplish coppery: head testaceous ; frontalia tawny, linear; epi- 
stoma prominent: mouth black, shining; palpi tawny, long, slender: 
feelers tawny ; third joint pitchy above, less than twice the length of the 
second, not nearly reaching the epistoma ; ‘sixth joint black, long, slender, 
