1933 ] 
Notes on Hippoboscidae 
69 
than the fronto-clypeus. Basal two-thirds of wing 
almost destitute of setulse on the upper side; second 
basal cell (M) only about one-third the length of the 
first (R) ; subcosta (SC) complete, ending in costa. 
Wing 6 to 6.5 mm. long. African species 
L. pilosa (Macquart). 
Mesonotum almost bare, except for patches of hairs be- 
hind the humeri and before the scutellum; scutellum 
with a distinct median depression, groove or furrow, 
the disk bare except for a pair of lateral setae and an 
apical fringe of soft hairs. Palpi as long as or longer 
than fronto-clypeus. Upper side of wing mostly 
covered with setulse, except the axillary cell (2d An) 
or this cell and the posterior fourth to half of the anal 
cell (Cu + 1st An) 2. 
2. Upper side of wing mostly covered with setulse ; only the 
axillary cell (2d An) bare. Inner orbital bristles of 
frons fairly numerous, mostly in one row, but a few 
forming an incomplete second row. Subcosta (SC) 
complete, ending in costa. Frons nearly twice as wide 
as an eye, with subparallel sides. Postvertex rather 
short, the anterior margin longer than each of the 
sides. Wing 7 to 8 mm. long 
L. palustris (Lutz, Neiva and Costa Lima). 
Axillary cell and posterior fourth to half of anal cell 
bare 3. 
3. Bristles on inner margin of orbital plates few in num- 
ber, placed mostly in one, irregular row. Subcosta (or 
auxiliary vein; SC) incomplete, not ending in costa.. 4. 
Inner orbital bristles of frons numerous, placed in more 
than one row. Subcosta (SC) complete, ending in 
costa. Frons about one and a half times to twice as 
wide as an eye; inner orbits distinctly diverging to- 
ward vertex 5. 
4. Inner orbits subparallel. Smooth postvertex rather long, 
semi-elliptical, with broadly rounded anterior angles, 
the anterior margin about as long as the sides ; with a 
rudimentary ocellus in a median pit. Wing 6.5 to 7 
mm. long L. fuse a (Macquart). 
