46Q 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 sionifer, Mas. 



Piceus ; thorax vittis tribus laterihus pectoreque alhidis ; abdomen 

 basi ferrugineum, vittis tribus ahbreviatis e maculis albis trigonis, 

 maculaque apud segmcnlum 2tmi testacea fere semicirculari ; genua 

 fulva ; tibicE postica breviter nigra hirta ; ala subcinerew, ad cos- 

 tam fuscescen tes. 



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 tibiae 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 

 emits a branch. Length of the body 8 lines ; of the wings 15 lines. 



China. 



