Die nord- u. südamerikan. Arten der Gatt. Conops. 157 
23. Conops flavifrons Walk. List of Diptera, Vol. III. p. 672 (1849). 
syn. Conops aurifrons Walk., 1. c., IV, 1158 (1849). 
„Body black, front of the head yellow, eyes black, bordered 
with red; facets on the fore part of the crown larger than those 
elsewhere, mouth black, with a ferruginous band, feelers black, 
first joint ferruginous at the tip, second pubescent, more than 
twice the length of the first, third and following joints short and 
forming a club, which is pitchy, ferruginous at the base, and not 
half the length of the second joint. Chest closed with very short 
black hairs, very slightly covered with gray bloom. Abdomen 
clothed like the chest and more than twice its length, linear to 
full one third of its length, spindle-shaped from thence to the tip. 
Legs black, hips and trochanters pitchy, covered with white 
silky down; an indistinct dark red band on each thigh; hind thighs 
tawny at the base; shanks and feet pitchy; wings very dark brown 
or almost black along the foreborder on the whole length and for 
half the breadth, somewhat paler at the tips; hind borders slightly 
clouded with brown, which is darkest along the sides of the veins; 
wing-ribs and veins black, poisers tawny, with black tips. Length 
of the body 9 lines, of the wings 14 lines. 
Para.‘ 
24. Conops serieeus Walk. Diptera Saundersiana IV, p. 256. 
„Black; head pale golden-coloured in front; feelers tawny, 
slender, much attenuated towards the tips; chest and abdomen 
with a hoary tinge; chest very indistinctly striped. Abdomen 
almost sessile, a little more than twice the length of the chest; 
second segment stout, rather short, widening from the base to the 
tip; third broader than the second, equal in length, forming with 
the following a spindle-shaped club; feet yellow, wings gray, with 
a brown forked stripe in the disk, upper fork much longer than the 
lower; halteres yellow, brown at the base. Length of the body 
7 lines, of the wings 11 lines. 
Amazon River.“ 
25. Conops ephippium Macqu. Dipt. exot. II., suppl. III, p. 11. 
d: „4 lin. Trompe testacee, ä extr&mite noire. Face et front 
jaunes. Antennes testacees. Troisieme article brun. Thorax d’un 
ferrugineux testace, a larges bandes noirätres presque contigu&s, 
qui n’atteignent nile bord posterieur, nil’&cusson ; &paules couvertes 
de duvet blanc; cötes a bande de duvet argente, s’etendant de puis 
le bord posterieur des epaules jusqu’aux hanches intermediaires; 
metathorax d’un testac€ noirätre. Abdomen: premier segment 
noirätre, deuxi&me testace, brunätre au milieu; troisieme testac& 
ä large bord noir posterieur; quatri&me et cinquieme noirs; sixi&me 
et septieme testaces, a duvet blanchätre et petits poils noirs; tous 
les segments a large bord posterieur de duvet blanchätre; ventre 
5. Heft 
