864 
C. II. TYLEK TOWNSEM). 
well-defined black vitlte; humeri and jdeurie cinereous; scutellum broadly 
tawny brown, narrowly blackish at base, vvith an apical decussate pair of macro- 
chsetai, and two longer and one shorter lateral macroebsetae. Abdomen very 
broad oval, almost round, vaulted, flattened, covered with short black bristles, 
first segment not shortened ; color black, sides of second and third segments 
pale orange, sometimes also ])art of first segment, apical half of anal segment 
orange or I'ulvous, basal portions broadly silvery pollinose, except first segment; 
first two segments with a lateral marginal macrochaetse ; third segment with 
eleven (probably twelve normally) marginal macrocbaetse ; anal segment armed 
wdth somewhat weaker macrocbaetse interspersed with bristles. Legs black, 
femora and tibiae silvery, more or less bristly, hind tibiae ciliate on outer border; 
claws and pulvilli very elongate. Wings much longer than abdomen, narrowed 
at tip, widening tow’ard base, grayish hyaline, without costal spine, third vein 
not bristly ; apical cell open, ending a little before tip of wing ; fourth vein bent 
at an angle, without stump or wrinkle; hind cros.s-veiu long, sinuate, nearly 
parallel with bind margin, nearer to bend of fourth vein ; tegulae whitish, hah 
teres tawmy. Length 8.5 mm. ; of wing 7 mm 
De.scribed from one specimen receiv'ed from Mr. Charles Robertson, 
(’arlinville, 111. 
A 9 specimen, which, for the present at least, I prefer to regard 
as this species, ditfers as follows: 
Head fully as wide as thorax; front nearly one-third width of head, sides 
golden pollinose; frontal bristles normal, extending back nearly to vertex, the 
two posterior ones on each side (not counting vertical bristles) directed back- 
ward ; the pair of bristles at each vertical angle much longer ; two orbital bris- 
tles; antenna; a little longer, third joint larger, crooked, bowed outward ; palj)! 
more yellowish. Thorax not widened. Abdomen narrower, only a little broader 
than thorax, with no red on sides, the anal segment nearly all deep fulvous; 
first segment without macrochsetse, second with a median marginal pair in addi- 
tion to the lateral marginal one on each side; third segment with ten marginal 
macrochtetfe, anal segment not so bristly. Claws and pulvilli but little elongate. 
Wings not so pointed toward tip ; third vein spined at base. Length 8 mm. ; of 
wing 6.5 mm. 
One specimen (Robertson), Carlinville, 111. 
This is not the genns Madpoda Br. and v. Bgst., but connects that 
genus with Exorista. It belongs in the vicinity of E. tricolor v. d. 
Wulp from iNIexico. 
Exorista Jiaviccmda Riley. This species shonld he known as Eron- 
tina Jiavicauda Riley. Two specimens from ]\Ir. Charles Robertson, 
collected in South Illinois, agree well tvith the descri[)tion and tignre, 
and belong to the genus Frontina. 
