146 MB. WALKER OK DTPTERA COLLECTED AT MAKESSAR, 
166. Lonchcea? consbntanea, n. s. Feem. Nigra, nitens, arista 
nuda, abdomine cyanesccnte-nigro, alis cinereis, halteribus albis. 
Female. Black, shining ; antennae black, nearly reaching the epistoma ; 
3rd joint linear, about thrice the length of the 2nd ; arista simple ; 
abdomen bluish black ; wings grey ; veins black, testaceous at the 
base ; diseal trausverse vein straight, upright, parted by less than its 
length from the border and by more than twice its length from the 
praebrachial transverse ; halteres white. Length of the body 2 lines ; 
of the w ings lines. 
167. Lonchcea? atratula, n. s. Fcm. Atra, pubescens, antennis 
epistoma attingentibus, arista plumosa, abdomine subovato, alis nigri- 
cantibus. 
Female. Deep black, pubescent, not shining; antennae reaching the 
epistoma ; 3rd joint linear, rounded at the tip, about four times the 
length of the 2nd ; arista plumose ; abdomen somewhat oval, a little 
broader but hardly longer than the thorax ; wings blackish ; veins 
black ; discal transverse vein straight, upright, parted by less than its 
length from the border, and by about twice its length from the prae- 
brachial transverse. Length of the body 2 lines; of the wings 3i 
lines. 
Gren. Thbessa, n. g. 
Frem. Corpus breve, crassum. Caput thorace multo latius. Oculi 
magni. Antenna epistoma fere attingentes; articulus 3 U8 liuearis, 2° 
plus duplo longior; arista plumosa. Abdomen subovatura, thorace 
non longius. Pedes longiusculi. Ala parvae. 
Female. Body short, thick. Head much broader than the thorax ; front 
wide. Eyes large. Antennas nearly reaching the epistoma ; 3rd joint 
linear, rounded at the tip, more than twice the length of the 2nd ; 
arista plumose. Thorax a little longer than broad ; scutellum rather 
prominent. Abdomen nearly oval, not longer than the thorax. Legs 
rather short. Wings small ; costal vein ending at the tip of the wing ; 
radial vein very near the costa ; cubital vein ending at a little in front 
of the tip ; transverse veins much retracted, very short. 
168. Thressa signifera, n. s. Foem. Nigra, nitens, capitc cya- 
neo, antennis pedibusque fulvis, thorace strigis duabus lateralibus 
albis, femoribus nigris, alis hyalinis apud costam nigris, halteribus 
albis. Var. ft. Alis apud costam hyalinis macula apicali nigra. 
Female. Black, shining ; head blue ; antenna; tawny ; thorax with a 
white transverse streak on each side ; legs tawny ; femora black, with 
tawny tips ; w ings hyaline, black along the costa ; veins black ; discal 
transverse vein parted by four times its length from the border, and 
by six times its length from the praebrachial transverse; halteres 
white. Var. ft. Wings not black along the costa, with the exception 
of a black apical spot. Length of the body Inline ; of the wings 
lines. 
