Muse idee 
305 
e. Veins Ri and R.j-j-5 with setae at the base; two equally prominent 
stemopleural macrochaetae; arista with rays both above and be¬ 
low; palpi as long as the proboscis; apical cell of the wing wide 
open. L. tibialis. ( Hcematobia B. B. not R. D.) . 
. Lyperosiops Town. 
ee. Only vein R4+5 with basal setae; anterior stemopleural macro- 
chaeta wanting; arista pectinate. 
f. Palpi as long as the proboscis, the latter stout, with fleshy termi¬ 
nal labellae; apical cell narrowly open; stemopleural macro¬ 
chaetae black. S. maculosa from Africa and related species 
from Asia. Stygeromyia Austen 
ff. Palpi much shorter than the proboscis, the latter pointed at the 
apex, without fleshy labellae; apical cell of the wing wide open. 
S. calcitrans, the stable fly and related species. Widely dis¬ 
tributed in both hemispheres (fig. no). Stomoxys Geof. 
aa. Proboscis neither slender nor elongate, the labellae fleshy and not adapted for 
piercing. 
b. Hypopleurae without a vertical row of macrochaetae.MUSCIN^E 
c. Arista bare; distal portion of R4+5 broadly curved at the end; hypop- 
pleurae with a sparse cluster of fine hairs. S. braziliana, Southern 
States and southward . Synthesiomyia B. B. 
cc. Arista pectinate or plumose. 
d. Arista pectinate. H. vittigera, with the posterior half of the abdomen 
metallic blue. Mexico. Hemichlora V. d. W. 
dd. Arista plumose. 
e. Middle tibia with one or more prominent setae on the inner (flexor) 
surface beyond the middle, or inner surface very hairy, 
f. Ri ends distad of the m-cu crossvein; R4+5 with a broad curve 
near its apical end. (= Neomesembrina Schnabl, = Metamesem- 
brina Town). M. meridiana. Europe. . . . Mesembrina Meigen 
ff. Ri ends proximad of the m-cu crossvein. 
g. Eyes pilose, sometimes sparsely in the female. 
h. Female with two or three stout orbital setae; the hind metatar¬ 
sus of the male thickened below 7 at the base and penicillate. 
D. pratorum. Europe. Dasyphora R. D.* 
hh. Neither sex with orbital setae. 
i. Abdomen without macrochaetae; arista plumose. C. 
asiatica. Eastern Hemisphere... Cryptolucilia B. B. 
ii. Abdomen with strong macrochaetae; arista very short- 
plumose, nearly bare. B. tachinina. Brazil . 
. Reinwardlia B. B. 
gg. Eyes bare. 
h. Body densely pilose; thoracic macrochaetae wanting; middle 
tibiae much elongate and bent; last section of R4+5 with a 
gentle curve. H. ( Mesembrina ) mystacea, el al., Europe 
and H. solilaria, N. America . . . Hypodermodes Town, 
hh. Body not densely pilose. 
♦The genus Eudasyphora Town, has recently been erected to contain D. lasiophthalma. 
