DIPTERA. % 
feet black, broad: wings dark tawny, having at two-thirds of the length a 
broad black band which fades towards the hind border; wing-ribs and 
veins dark tawny; tip cross-vein like that of C. nigroflamma; poisers 
tawny. Length of the body 4 lines ; of the wings 7 lines, 
South America. 
NONACRIS, n. g. 
Antenne septem-articulate ; articulus 2us lo multo longior; 3us et 
sequentes breves : alis vena transversa apicalis nulla; areolis una discoi- 
dalis, submarginalis una, postice quatuor ; 4ta clausa 
Feelers seven-jointed; second much longer than the first; third and 
following joints short: no tip eross-vein in the wing ; one discoidal areolet ; 
one submarginal areolet; four posterior areolets, the fourth closed before 
the border. 
Nonacris TRANSEQquA, Mas. 
Fulvus, antennis nigris basi fulvis, pedibus fulvis, tarsis apice piceis, alis 
fulris. 
Body tawny: eyes pitchy, convex, meeting on the crown; facets 
small: eyelets forming a little triangle: feelers black, clothed with short 
black hairs ; first and second joints tawny ; third and fourth dark tawny : 
chest clothed with short yellow hairs: abdomen linear, flat, a little nar- 
rower than the chest and fulltwice its length: legs tawny, rather long and 
slender, especially the hind pair; shanks darker than the thighs; feet 
pitchy towards the tips ; foot-cushions pale tawny: wings and wing-ribs 
tawny; veins pitchy, tawny towards the base; poisers tawny, rather long. 
Length of the body 44 lines ; of the wings 9 lines. 
South America. 
Fam. TABANII. 
PANGONTIA, Latreille. 
The species of this genus are not very numerous, but it contains se- 
yeral groups or subgenera, for which the following names are proposed. 
Nucerta. 
Among the characters of this division the length of the sucker is most 
apparent: the chest is slightly striped: the abdomen is more or less 
es 4 Jar 
=< =)3=—h 
