DIPTERA. 155 
black, tawny towards the base and along the fore borders. Length of the 
body 4 lines ; of the wings 7 lines. 
East India. 
Genus LEPTOGASTER, Meigen. 
LEPTOGASTER MULTICINCTA, Mas. 
Fusca, capite albo, pectore cano, abdomine fulvo segmentorum discis piceis, 
antennis nigris basi fulvis, pedibus flavis fulvo piceo nigroque cinctis, 
alis limpidis. 
Head tawny, adorned with a white covering, clothed with a few white 
hairs: eyes brassy, meeting on the crown; a few very large facets in front, 
which is flat: sucker black: feelers black; first and second joints tawny ; 
chest brown gray and beset with a very few black bristles on each side: 
breast hoary: abdomen pitchy, nearly four times the length of the chest ; 
appendages of the tip very large; segments adorned with tawny bands, 
and on each side with tawny, triangular spots; under side tawny: thighs 
pale yellow, tawny towards the tips which are black; hind-thighs club- 
shaped, pale yellow for full half the length from the base ; this colour is 
divided by a pitchy band from the tawny hue, which extends to the black 
tips; tips of the shanks pitchy; each hind-shank adorned with a pitchy 
band; feet tawny; pale yellow at the base, pitchy at the tips; claws 
black: wings colourless ; wing-ribs tawny ; veins black, tawny at the base ; 
poisers pale tawny. Length of the body 44 lines ; of the wings 6% lines. 
South America. 
PHENEUS, n. g. 
Antennis articuli lus et 2us breves; 3us longior, conicus; seta arti- 
culis precedentibus multd longior: pedes postici longi, validi: areole sub- 
marginales due; areole postice sex, la et 3a clause ; 2a, 4a, 5a et 6a 
aperte. 
Male. Eyes nearly meeting on the crown: sucker short, not much 
formed for carnivorous habits ; first and second joints of the feelers short ; 
third longer, conical ; bristle longer than all the preceding joints : hind- 
legs much longer and stouter than the two other pair; claws and foot- 
cushions very small: two submarginal areolets ; six posterior areolets ; the 
first and third closed near the border of the wing; the other four open. 
