452 INSECTA SAUNDERSIANA. 
first joint forming an acute angle above in front; third slender, 
slightly curved; its horn very short and minute, forming an almost 
right angle. ‘Thorax black above, with four hoary stripes, tawny 
on each side and in the disk behind. Abdomen black towards the- 
tip, and with a black spot at the base, and a white triangular 
spot on each of the intermediate segments. Femora and tarsi black, 
the former with tawny tips. Wings grayish; veins black; trans- 
verse veins, and some of the longitudinal veins clouded with black; fore 
fork of the cubital vein simple, forming near its base a very obtuse and 
somewhat rounded angle. Halteres white. Length of the body 6 lines ; 
of the wings 13 lines. 
Port Natal. 
TABANUS SIGNIFER, Mas. 
Piceus; thorax vittis tribus lateribus pectoreque albidis ; abdomen 
basi ferrugineum, vitlis tribus abbreviatis e maculis albis trigonis, 
maculaque apud segmentum 2um testacea fere semicirculart ; genua 
fulva; tibia postice breviter nigro hirte ; ale subcineree, ad cos- 
tam fuscescentes. 
Piceous. Eyes darker, and composed of much smaller facets in front 
and on each side than elsewhere. Thorax with three whitish stripes ; 
sides and pectus whitish. Abdomen ferruginous towards the base ; seg- 
ments from the first to the fourth with triangular white spots on each 
side; second segment with a pale testaceous nearly semicircular spot on 
the hind border; third and fourth with a large triangular white spot on 
each. Knees tawny; hind tibie with very short black hairs, Wings 
grayish, brownish along the costa; veins piceous ; fore fork of the cubital 
vein forming near its base an obtuse but sharply defined angle, which 
emitsa branch. Length of the body 8 lines; of the wings 16 lines. 
China. 
